Science & Discovery in the 19th century
853 sourced entries, 1800 CE to 1899 CE, oldest first. Also see Science & Discovery across every century or everything else in the 19th century.
- 1800February 11 – Infrared radiation is discovered by astronomer Sir William Herschel.source
- 1800February 22 – The Baker rifle, designed by Ezekiel Baker, is selected by the British Board of Ordnance as a new standard.source
- 1800March 20 – Alessandro Volta describes his new invention, the voltaic pile, the first chemical battery, in a letter to the Royal Society of London.source
- 1800Infrared radiation is discovered by William Herschel.United Kingdomsource
- 1801January 1 – Giuseppe Piazzi discovers the asteroid and dwarf planet Ceres.source
- 1801September 8 - Solar eclipse of September 8, 1801Russiasource
- 180126 November – Charles Hatchett announces his discovery of the chemical element niobium to the Royal Society.United Kingdomsource
- 1801The first of a continuous series of censuses is held in France.source
- 1801Ultraviolet radiation is discovered by Johann Wilhelm Ritter.source
- 1801Alexander Mackenzie's Voyages to the Frozen and Pacific Oceans published in London.Canadasource
- 1801A Census was held in Iceland, along with other parts of the Denmark-Norway.Icelandsource
- 1801Carl Gustaf af Leopold publishes the Afhandling om svenska stafsättetSwedensource
- 1801Thomas Young discovers the interference of light.United Kingdomsource
- 1801Dalton's law: John Dalton observes that the total pressure exerted by a gaseous mixture is equal to the sum of the partial pressures of each individual component in a gas mixture.United Kingdomsource
- 1801Cyhoeddiadau Cymdeithas y GwyneddigionWalessource
- 1802February – The Rosetta Stone is brought to England by Colonel Tomkyns Hilgrove Turner, who arrives at Portsmouth on the captured French frigate L'Egyptiane.source
- 1802March 28 – H. W. Olbers discovers the asteroid Pallas.source
- 18028 April - Organic Articles presented by Napoleon.Francesource
- 1802April 10 – The Great Trigonometrical Survey of India begins with the measurement of a baseline near Madras.source
- 18026 May – William Herschel coins the term asteroid and on 1 July first uses the term binary star to refer to a star which revolves around another.United Kingdomsource
- 18025 July – André-Jacques Garnerin and Edward Hawke Locker make a 17-mile (27.4-km) balloon flight from Lord's Cricket Ground in St John's Wood, London, to Chingford in just over 15 minutes.United Kingdomsource
- 1802John Playfair publishes Illustrations of the Huttonian Theory of the Earth in Edinburgh, popularising James Hutton's theory of geology.Scotlandsource
- 1802Abraham Rees - The New Cyclopaedia, vol. 1Walessource
- 1803April 26 – The L'Aigle meteorite falls in Normandy, causing a shift in scientific opinion on the origin of meteorites.source
- 1803September 6 – John Dalton, British scientist, begins using symbols to represent the atoms of different elements.source
- 18036 September – John Dalton FRS composes his five main points of atomic theory, the first to do so.United Kingdomsource
- 180321 October – John Dalton presents a paper to the Manchester Literary and Philosophical Society containing the first table of atomic weights.United Kingdomsource
- 1803Major breakthroughs in chemistry occur, with the identification of the elements rhodium and palladium (by William Hyde Wollaston); osmium and iridium (by Smithson Tennant); and cerium (by Wilhelm Hisinger, Jons Jakob Berzelius and Martin Heinrich Klaproth)source
- 1803Humphry Repton publishes Observations on the Theory and Practice of Landscape Gardening.United Kingdomsource
- 1803Smithson Tennant discovers the chemical elements iridium and osmium.United Kingdomsource
- 1803William Hyde Wollaston discovers the chemical element rhodium.United Kingdomsource
- 1803Paeonia mascula is discovered growing on the island of Steep Holm - the only species of peony native to the British Isles.Walessource
- 1804April 5 – The High Possil meteorite, the first recorded meteorite to fall in Scotland in modern times, falls at High Possil.source
- 18045 April – High Possil meteorite, the first recorded meteorite to fall in Scotland in modern times, falls at Possil.Scotlandsource
- 1804June 21 – Smithson Tennant announces the discovery of the elements iridium and osmium; three days later, William Hyde Wollaston reveals to the Royal Society that he is the formerly anonymous discoverer of palladium.source
- 1804September 1 – German astronomer K. L. Harding discovers the asteroid Juno.source
- 18041 September – German astronomer K. L. Harding discovers the asteroid Juno.Germanysource
- 18046 October – HDMS Prinds Christian Frederik is launched from Orlogsværftet on Nyholm in Copenhagen.Denmarksource
- 1804Dr Joseph Mason Cox publishes Practical Observations on Insanity; in which some suggestions are offered towards an improved mode of treating diseases of the mind, and some rules proposed which it is hoped may lead to a more humane and successful method of cure.United Kingdomsource
- 1804Edward Davies - Celtic Researches on the Origin, Traditions and Languages of the Ancient BritonsWalessource
- 1804The Cambrian is the first newspaper published in Wales.Walessource
- 1805Thomas Charles - Geiriadur YsgrythyrolWalessource
- 180612 June – The Alexander arrives at Portsmouth with Teina and Maki aboard.New Zealandsource
- 18067 October – Carbon paper patented by Ralph Wedgwood.United Kingdomsource
- 1806Flights in Copenhagen with manned hot air balloon.Denmarksource
- 1806Noah Webster publishes A Compendious Dictionary of the English Language, his first American English dictionary.United Statessource
- 1806Thomas Charles - Geiriadur YsgrythyrolWalessource
- 1807March 29 – H. W. Olbers discovers the asteroid Vesta.source
- 1807October 6 – English chemist Humphry Davy electrochemically isolates potassium from potash.source
- 1807James Hogg, Thomas Mouncey Cunningham and others publish the poetry collection The Forest Minstrel, and Hogg publishes The Mountain Bard.Scotlandsource
- 1807The post of Regius Professor of Zoology in the University of Glasgow is established as the Regius Chair of Natural History by King George III, Lockhart Muirhead being the first holder.Scotlandsource
- 1807Undated – Potassium and sodium isolated by Sir Humphry Davy.United Kingdomsource
- 1807Peter Bailey Williams – Trysorfa GwybodaethWalessource
- 1808June 30 – English chemist Humphry Davy informs the Royal Society of London of his isolation and discovery of two elements by electrolysis. From lime, he has produced calcium and established that lime is calcium oxide; by heating boric acid and potassium in a copper tube, he creates a substance he calls boracium, which is eventually called boron. This year he also isolates magnesium and strontium.source
- 180830 June – Chemist Humphry Davy informs the Royal Society of London of his isolation and discovery of two elements by electrolysis. From lime, he has produced calcium and established that lime is calcium oxide; by heating boric acid and potassium in a copper tube, he creates a substance he calls boracium, and which is eventually called boron. This year he also isolates magnesium and strontium.United Kingdomsource
- 180819 November - The naval frigate HMS Owen Glendower is launched.Walessource
- 1808December 9 – At 20:34 UTC, Mercury occults Saturn (there are no observation records).source
- 1808German mathematician Carl Friedrich Gauss publishes Theorematis arithmetici demonstratio nova, introducing Gauss's lemma in the third proof of quadratic reciprocity.Germanysource
- 1808Mary Leadbeater's Poems published.Irelandsource
- 1808William Blackwood begins publication of the Edinburgh Encyclopædia, edited by David Brewster.Scotlandsource
- 1808John Dalton begins publication of A New System of Chemical Philosophy, explaining his atomic theory of chemistry.United Kingdomsource
- 1809August – The USS Constitution ("Old Ironsides") is recommissioned as the flagship of the North Atlantic Squadron.source
- 1809December - The former monarch and his family leaves Sweden for Germany.Swedensource
- 1809Louis Poinsot describes the two remaining Kepler–Poinsot polyhedra.source
- 1809William Combe begins publication of the verse Tour of Dr Syntax in search of the Picturesque in Ackermann's Political Magazine, illustrated by Thomas Rowlandson.United Kingdomsource
- 1810June – Nicolas Appert publishes L'art de conserver pendant plusieurs années toutes les substances animales ou végétales, the first description of modern food preservation using airtight containers.source
- 181020 October - Jean Baptiste Bernadotte arrives in Sweden.Swedensource
- 1810Chlorine named by Humphry Davy.United Kingdomsource
- 18111 February – John Oxley is appointed Surveyor-General of New South Wales.Australiasource
- 1811March 25 – The Great Comet of 1811 is discovered by Honoré Flaugergues.source
- 181125 March – The Great Comet of 1811 is discovered by Honoré Flaugergues.Francesource
- 181127 May – second national Census. In Scotland the count is carried out by schoolmasters.Scotlandsource
- 18118 September – The first known landing on Rockall is made by a party from HMS Endymion.United Kingdomsource
- 181126 October – HDMS Najaden is launched at Nyholm in Copenhagen.Denmarksource
- 1811Iodine was discovered by French chemist Bernard Courtois.source
- 1811Edinburgh Astronomical Institution established.Scotlandsource
- 1811Great Comet of 1811 visible overhead through the fall.United Statessource
- 1811John Williams (ed.) - Gwaith Prydyddawl ... W. WilliamsWalessource
- 1812February 12 – Napoleon I authorizes the usage of Mesures usuelles, the basis of the metric system.source
- 1812August 20 – Launch of John Molson's second steamboat, the Swiftsure, at Montreal.Canadasource
- 1812August – Henry Bell's PS Comet begins a passenger service on the River Clyde between Glasgow and Greenock, the first commercially successful steamboat service in Europe.Scotlandsource
- 1812The New Flora Britannica (with illustrations by Sydenham Teak Edwards)Walessource
- 1813June 1 – The English frigate "Shannon" takes the "Chesapeake," in 15 minutes, off Boston.Canadasource
- 1813Probable date – George E. Clymer invents the Columbian press, used to print newspapers worldwide.source
- 1813The Norwegian journal Historisk-philosophiske Samlinger (Historical-Philosophical Collections) final issue was published.Norwaysource
- 1813Svetlana (ballad) by Vasily Zhukovsky publishedRussiasource
- 1813Robert Owen obtains control of the cotton spinning mills at New Lanark and publishes A New View of Society, or Essays on the Principle of the Formation of the Human Character.Scotlandsource
- 1813Adam Kok III's people assert the name Griqua.South Africasource
- 1813Hugh Davies - Welsh Botanology ... A Systematic Catalogue of the Native Plants of Anglesey, in Latin, English, and WelshWalessource
- 181423 May – The Active departs Hobart.New Zealandsource
- 181422 August – The Active arrives in Sydney.New Zealandsource
- 181412 November – Kendall appointed Justice of the Peace for New Zealand by Governor Macquarie.New Zealandsource
- 181428 November – The Active finally departs Port Jackson on its way to establish the mission at Rangihoua.New Zealandsource
- 1814Sydenham Edwards founds The Botanical Register.Walessource
- 181519 January – Returning northward the Active calls into Whangārei, apparently only the second ever European vessel to do so, after the Venus in 1806.New Zealandsource
- 1815February – The Hartford Convention arrives in Washington, D.C.United Statessource
- 1815October 3 – The Chassigny Martian meteorite falls in Chassigny, Haute-Marne, France.source
- 18153 October - Fall of the Mars meteorite Chassigny in Chassigny, Haute-Marne.Francesource
- 1815November 3 – Sir Humphry Davy announces his invention, the Davy lamp (a coal mining safety lamp),source
- 1815Wisden Cricketers' Almanack retrospectively recognises statistics for first-class cricket in England from this year.source
- 1815The Great Migration from Europe begins.Canadasource
- 1815Robert Kirk's The Secret Commonwealth, Gaelic folklore collected in 1691/92, is first published.Scotlandsource
- 18161 September – the Northern Lighthouse Board's new light on the Isle of May, designed by Robert Stevenson, is completed.Scotlandsource
- 1816David Brewster discovers stress birefringence.Scotlandsource
- 1817January – The Black Dwarf is first published in London as a satirical radical unstamped newspaper by journalist Thomas Jonathan Wooler.United Kingdomsource
- 181722 July - Windham Sadler succeeds in crossing the Irish Sea by hot air balloon, landing near Holyhead.Walessource
- 181721 December – Lachlan Macquarie recommends the adoption of the name Australia for the continent instead of New Holland.Australiasource
- 1817The post of Regius Professor of Chemistry at the University of Glasgow is established by King George III.Scotlandsource
- 1818January 3 (21:52 UTC) – Venus occults Jupiter. It is the last occultation of one planet by another before November 22, 2065.source
- 181825 March – Caspar Wessel, mathematician (born 1745).Norwaysource
- 1818July 29 – French physicist Augustin-Jean Fresnel submits his prizewinning "Memoir on the Diffraction of Light" to the French Academy of Sciences, precisely accounting for the limited extent to which light spreads into shadows, and thereby demolishing the oldest objection to the wave theory of light.source
- 181829 July - Physicist Augustin-Jean Fresnel submits his prizewinning "Memoir on the Diffraction of Light" to the French Academy of Sciences, precisely accounting for the limited extent to which light spreads into shadows, and thereby demolishing the oldest objection to the wave theory of light.Francesource
- 1818Change of command at the Russian-American Company (RAC)Russiasource
- 1818Launch of Otechestvennye Zapiski (Memories of the Homeland)Russiasource
- 1818Joseph Harris (Gomer) re-founds the periodical Seren Gomer.Walessource
- 1818Charles Norris - A Historical Account of TenbyWalessource
- 1819January 29 – Sir Stamford Raffles lands on the island of Singapore.source
- 1819March 1 – The U.S. naval vessel USS Columbus is launched in Washington, D.C.United Statessource
- 1819July 1 – German astronomer Johann Georg Tralles discovers what will be called the Great Comet of 1819.source
- 18191 July – German astronomer Johann Georg Tralles discovers what will be called the Great Comet of 1819Germanysource
- 18199 November – Marsden leaves at the end of his second visit.New Zealandsource
- 1819December 17 – The new astronomical observatory of Capodimonte in Naples starts operating. The astronomer Carlo Brioschi made the first observation by measuring the position of ⍺ Cassiopeiae.source
- 1820March 10 – The Astronomical Society of London is founded.source
- 182010 March – Astronomical Society of London is founded.United Kingdomsource
- 1820April 8 – The statue of the Venus de Milo (Aphrodite of Milos, c. 150 BC-125 BC) is discovered on the Greek island of Milos, by a peasant named Yorgos Kentrotas.source
- 1820April 21 – Hans Christian Ørsted discovers the relationship between electricity and magnetism.source
- 182011 May – Launch of HMS Beagle, the ship that will take the young Charles Darwin on his scientific voyage, at Woolwich Dockyard.United Kingdomsource
- 18205 December – Marsden leaves at the end of his third visit.New Zealandsource
- 182015 December – PS Comet (1812) is wrecked near Craignish.Scotlandsource
- 1820Divorce Bills Evidence Act (British statute)Indiasource
- 1820Regina Maria Roche publishes The Munster Cottage Boy: a Tale.Irelandsource
- 1820Robert Chambers's publishing company publishes The Songs of Robert Burns.Scotlandsource
- 1820Edward Jones – Hen Ganiadau CymruWalessource
- 1821January 21 – Peter I Island in the Antarctic is first sighted, by Fabian Gottlieb von Bellingshausen.source
- 1821The publisher T&T Clark is established in Edinburgh by Thomas Clark.Scotlandsource
- 1821William Hooker (botanist) publishes Flora Scotica; or, A description of Scottish plants.Scotlandsource
- 1821Benjamin Lundy publishes the first issue of his abolitionist newspaper, Genius of Universal Emancipation.United Statessource
- 182223 May – HMS Comet launched at Deptford Dockyard, the first steamboat commissioned by the Royal Navy.United Kingdomsource
- 1822August 22 – The English ship Orion lands at Yerba Buena, modern-day San Francisco, under the command of William A. Richardson.United Statessource
- 1822September 27 – Jean-François Champollion announces his success in deciphering Egyptian hieroglyphs, using the Rosetta Stone, in a letter to the Académie des Inscriptions et Belles-Lettres in Paris (based on the work of Thomas Young).source
- 182227 December – The Snapper is the first deep-sea vessel to enter what will become the port at Bluff. (see also 1813)New Zealandsource
- 1822Hieroglyphs deciphered by Thomas Young and Jean-François Champollion using the Rosetta Stone.Francesource
- 1822Egyptian hieroglyphs are deciphered by Thomas Young and Jean-François Champollion using the Rosetta Stone.United Kingdomsource
- 1822A fossil Iguanodon tooth is discovered by Gideon Mantell and his wife Mary in West Sussex; in 1825 it will be the first fossil to be recognised as that of a dinosaur.United Kingdomsource
- 182323 January – At Paviland Cave on the Gower Peninsula, William Buckland inspects the "Red Lady of Paviland", the first identification of a prehistoric (male) human burial (although Buckland dates it as Roman).United Kingdomsource
- 182323 January – In Paviland Cave on the Gower Peninsula, William Buckland inspects the "Red Lady of Paviland", the first identification of a prehistoric (male) human burial (first discovered on 21 December last).Walessource
- 1823February 15 (approx.) – The first officially recognised gold is found in Australia, by surveyor James McBrien at Fish River, near Bathurst, New South Wales, predating the Australian gold rushes.source
- 182319 August – After the arrival of John Hobbs and Nathaniel Turner, Samuel Leigh leaves the Kaeo mission.New Zealandsource
- 182310 December – Mary Anning finds the first complete Plesiosaurus skeleton, on the Jurassic Coast.United Kingdomsource
- 1823Olbers' paradox is described by the German astronomer Heinrich Wilhelm Olbers.source
- 1823William Charles Wentworth publishes the first book of Australian verse, Australasia: A Poem, in London.Australiasource
- 1824February 20 — William Buckland formally announces the name Megalosaurus, the first scientifically validly named non-avian dinosaur species.source
- 182420 February – Rev. Professor William Buckland becomes the first person to describe a terrestrial dinosaur in a scientific journal.United Kingdomsource
- 1824The Colorado potato beetle is first described, by Thomas Say.source
- 1824The Panoramagram is invented as the first stereoscopic viewer.source
- 1824Name change from ' New Holland ' to ' Australia ', recommended by Matthew Flinders in 1804, receives official sanction by the United Kingdom.Australiasource
- 1824The Ordnance Survey of Ireland is established.Irelandsource
- 1824Thomas Say begins publication of American Entomology, or Descriptions of the Insects of North America in Philadelphia, including the first description of the Colorado potato beetle.United Statessource
- 1824John Neal publishing serially the first written history of American literature, American Writers (1824–1825)United Statessource
- 1824John Howell (editor) – Blodau DyfedWalessource
- 1824Chess William Davies Evans develops the Evans Gambit.Walessource
- 18251 February – windstorm passes over Scotland with winds around 140 kn.Scotlandsource
- 1825February 10 – Gideon Mantell names and describes the second known dinosaur Iguanodon.source
- 182523 April – Royal charter granted to the Geological Society of London.United Kingdomsource
- 1825Sydney, Lady Morgan, publishes Absenteeism.Irelandsource
- 1825Thomas Crofton Croker publishes the first volumes of his Fairy Legends and Traditions of the South of Ireland.Irelandsource
- 1825Robert Davidson's Poems are published.Scotlandsource
- 1825Michael Faraday isolates benzene.United Kingdomsource
- 1825John Neal publishing serially the first written history of American literature, American Writers (1824–1825)United Statessource
- 1826February 23 – Russian mathematician Nikolai Ivanovich Lobachevsky develops non-Euclidean geometry (independently of János Bolyai).source
- 1826April – A number of leading scientists form the Zoological Society of London.United Kingdomsource
- 1826Aniline is first isolated, from the destructive distillation of indigo, by Otto Unverdorben.source
- 1826Christian Isobel Johnstone, as 'Margaret Dods', publishes The Cook and Housewife's Manual.Scotlandsource
- 1826Possible date – Discovery of the Hunterston Brooch.Scotlandsource
- 1826James Humphreys - Observations on the Actual State of the English Laws of Real Property, with the outlines of a CodeWalessource
- 1827January 27 – Author Johann Wolfgang von Goethe first elaborates on his vision of Weltliteratur (world literature), in a letter to Johann Peter Eckermann, declaring his belief that "poetry is the universal possession of mankind", and that "the epoch of world literature is at hand, and each must work to hasten its coming."source
- 1827April 7 – John Walker begins selling his invention, the "Lucifer" friction match, in England.source
- 18277 April – John Walker begins selling his invention, the "Lucifer" friction match.United Kingdomsource
- 1827May 1 – Georg Ohm publishes Die galvanische Kette, mathematisch bearbeitet (tr., The Galvanic Circuit Investigated Mathematically) in which Ohm's law appears for the first time.source
- 1827June 4 – French inventor Joseph Niépce sends a package to Louis Daguerre revealing the existence of his invention, "heliography", where an image can be reproduced onto a pewter plate and then reprinted. In 1829, the two will begin a partnership, and Daguerre will perfect Niépce's photographic process to reproduce images more quickly.source
- 1827Between June 4–July 18 – In Saint-Loup-de-Varennes, France, Nicéphore Niépce makes the first photograph, View from the Window at Le Gras.source
- 1827John James Audubon begins publication of the 10-volume The Birds of America, in the United Kingdom.source
- 1827Autumn: The Icelandic Literary Society's journal Skírnir begins being published.Icelandsource
- 1827Scottish botanist Robert Brown observes the phenomenon of Brownian motion.United Kingdomsource
- 18287 January – Rev. Henry Duncan describes his discovery of the fossil footmarks of quadrupeds (Chelichnus duncani) in Permian red sandstone at Cornockle Muir, near Lochmaben in Dumfriesshire, the first scientific report of a fossil track, in a paper read to the Royal Society of Edinburgh.Scotlandsource
- 1828December – Mary Anning discovers Britain's first pterosaur fossil at Lyme Regis on the south coast.United Kingdomsource
- 1828Friedrich Wöhler synthesizes urea, possibly discrediting a cornerstone of vitalism.source
- 1828John Walters - An English and Welsh DictionaryWalessource
- 1829Felix Mendelssohn visits Wales and transcribes some Welsh music.Walessource
- 183017 May – A meteorite falls on the North Inch at Perth.Scotlandsource
- 183012 June – The steam ship PS Frederik den Sjette is launched in Copenhagen. It replaces PS Caledonia on the route between Copenhagen and Kiel.Denmarksource
- 183015 September HDMS Bellona is launched at Nyholm in Copenhagen.Denmarksource
- 1830The C.F. Hansen Medaillen is introduced to mark the 50th anniversary of Christian Frederik Hansen's appointment.Denmarksource
- 1830The private Markree Observatory is set up.Irelandsource
- 18317 March – Royal Astronomical Society receives its Royal Charter.United Kingdomsource
- 18312 April – HDMS Galathea is launched at Nyholm in Copenhagen.Denmarksource
- 1831August 29 - Michael Faraday demonstrates electromagnetic induction at the Royal Society of London. Joseph Henry recognises it at about the same time.source
- 1831Frédéric Chopin arrives in Paris.Francesource
- 183119–21 March – one of Goldsworthy Gurney’s steam road coaches runs from Edinburgh to Glasgow.Scotlandsource
- 1831William Wallace invents the eidograph.Scotlandsource
- 1831James Hogg publishes Songs, by the Ettrick Shepherd.Scotlandsource
- 1832July 2 – André-Michel Guerry presents his Essay on moral statistics of France to the French Academy of Sciences, a significant step in the founding of empirical social science.source
- 183219 July – Anatomy Act provides for licensing and inspection of anatomists, and for unclaimed corpses from public institutions to be available for their dissection.United Kingdomsource
- 1832September - The Opéra-Comique moves from Salle Ventadour to Salle de la Bourse in Paris.Francesource
- 183215 December – The CGS system goes back to a proposal in 1832 by the German mathematician Carl Friedrich Gauss to base a system of absolute units on the three fundamental units of length.Germanysource
- 1832Work Faust, Part Two by Johann Wolfgang von Goethe published.Germanysource
- 1832John Donald Carrick edits the poetry anthology Whistle Binkie.Scotlandsource
- 1832James Hogg, writing as "The Ettrick Shepherd", publishes the poems Altrive Tales.Scotlandsource
- 1832Benjamin Jones (P A Môn) — Amddiffyniad o Brynedigaeth NeillduolWalessource
- 183328 August – Bank Notes Act gives Bank of England notes over £5 in value the status of "legal tender" in England and Wales.United Kingdomsource
- 1833November 12–13 – "The night the stars fell on Alabama": A spectacular occurrence of the Leonid meteor shower is observed in Alabama.United Statessource
- 1833November 13 – Meteor showers at Niagara, Ontario.Canadasource
- 1833The dawn of biochemistry: The first enzyme, diastase, is discovered by Anselme Payen.source
- 1833Chemist Thomas Graham proposes Graham's law.Scotlandsource
- 1834March 14 – John Herschel discovers the open cluster of stars now known as NGC 3603, observing from the Cape of Good Hope.source
- 1834March – William Whewell (anonymously) first publishes the term scientist in the Quarterly Review (but notes it as "not generally palatable").United Kingdomsource
- 1834November 11 – The rare 1804 dollar coin is struck by the United States Mint.United Statessource
- 1834Croquet is recorded as being played in Ireland (at Greenmount near Castlebellingham, County Louth) at about this date.Irelandsource
- 1834Taras Shevchenko National University of KyivRussiasource
- 1834Thomas Henderson is appointed first Astronomer Royal for Scotland.Scotlandsource
- 1834Edinburgh Geological Society is established.Scotlandsource
- 1834Foulk Robert Williams - Llyfr Cerddoriaeth o Gerddi Sion... (unpublished MS)Walessource
- 183525 July – The first demonstration of an incandescent light bulb is made by James Bowman Lindsay in Dundee, Scotland.United Kingdomsource
- 1835August 25 – In the U.S., The New York Sun prints the first of six installments of the Great Moon Hoax.source
- 1835August 25 – The Great Moon Hoax begins.United Statessource
- 1835November 16 – Halley's Comet reaches perihelion, its closest approach to the Sun.source
- 183530 December – The Beagle leaves New Zealand.New Zealandsource
- 1835Cell division is first observed under the microscope by German botanist Hugo von Mohl as he works over green algae Cladophora glomerata.Germanysource
- 1835Hugh Miller publishes Scenes and Legends in the North of Scotland.Scotlandsource
- 1835Adam Sedgwick names the Cambrian period in geology.Walessource
- 1836January 5 – Davy Crockett arrives in Texas, which at this time is not part of the United States.United Statessource
- 18363 February – A new fourpence coin (groat or "joey") is declared legal tender prior to its first minting since 1800.United Kingdomsource
- 18365 March – George Brodie appointed Historiographer RoyalScotlandsource
- 1836May 15 – During an eclipse of the Sun, English astronomer Francis Baily observes the phenomenon named after him as Baily's beads.source
- 183618 June – Belgium adopts metric system.Belgiumsource
- 1836The dissertation of the German writer Georg Büchner on the common barbel (fish), Barbus barbus, "Mémoire sur le Système Nerveux du Barbeaux (Cyprinus barbus L.)", appears in Paris and Strasbourg. After receiving his doctorate, he is appointed in October by the University of Zurich as a lecturer in anatomy.Germanysource
- 1836Former windmill at Maxwelltown opens as converted into an astronomical observatory and the world's oldest working camera obscura, basis of the modern-day Dumfries Museum.Scotlandsource
- 1836First McGuffey Readers published.United Statessource
- 18377 February – Samuel Marsden arrives in New Zealand on his last visit.New Zealandsource
- 1837February – Charles Lever begins publishing his fictional The Confessions of Harry Lorrequer in Dublin University Magazine.Irelandsource
- 18378 April - Low-water mark datum measured at Poolbeg Lighthouse by the Ordnance Survey.Irelandsource
- 18374 July – Samuel Marsden leaves New Zealand for the final time.New Zealandsource
- 183719 July – The Isambard Kingdom Brunel-designed steamship SS Great Western is launched in Bristol.United Kingdomsource
- 1837October – Alleged first sighting of a Spring-heeled Jack, in London.United Kingdomsource
- 183715 November – Isaac Pitman publishes Pitman Shorthand.United Kingdomsource
- 1837Louis Daguerre develops the daguerreotype.source
- 1837Peter Chaadev publishes Apology of a Madman.Russiasource
- 1838November 1 – Lord Durham leaves Quebec.Canadasource
- 1838Proteins are discovered by Gerardus Johannes Mulder. and named by Jöns Jacob Berzelius.source
- 1838Friedrich Bessel makes the first accurate measurement of distance to a star.source
- 1838David Brewster originates the stereoscope.Scotlandsource
- 1838Alexander and John Bethune publish Tales and Sketches of the Scottish Peasantry.Scotlandsource
- 1838Isaac Williams - Thoughts in Past YearsWalessource
- 1839January 2 – The first photograph of the Moon is taken, by French photographer Louis Daguerre.source
- 1839January 9 – The French Academy of Sciences announces the daguerreotype photography process.source
- 18399 January – The French Academy of Sciences announces the Daguerreotype photography process.Francesource
- 183925 January – H. Fox Talbot shows his "photogenic drawings" at the Royal Institution in London. Sara Anne Bright is also producing such photographic reproductions this year.United Kingdomsource
- 183929 May – Mungo Ponton presents his discovery of the light-sensitive quality of sodium dichromate as a method of permanent photography.Scotlandsource
- 1839August 19 – The French government gives the daguerreotype "for the whole world".source
- 1839November 10 - The first known photograph taken in Spain is taken at the Pla de Palau, BarcelonaSpainsource
- 1839December – New Committee of Council on education sets up a new national system of Inspectors of Schools for grant-aided establishments.United Kingdomsource
- 1839Michael Faraday publishes Experimental Researches in Electricity, clarifying the true nature of electricity.source
- 1839The Statue of Thomas Munro was shipped to MadrasIndiasource
- 1839Thomas John Newbold is appointed deputy assistant adjutant-general and postmaster to the field force of the East India CompanyIndiasource
- 1839Roderick Murchison publishes The Silurian System.Scotlandsource
- 1840March 12 – Paweł Strzelecki reaches Australia's highest summit, Mount Kosciuszko.source
- 18403–9 July – The 2nd Scandinavian Scientist Conference is held in Copenhagen.Denmarksource
- 184011 August — Union Jack is flown over Akaroa.New Zealandsource
- 1840December 7 – David Livingstone leaves Britain for Africa.source
- 18408 December – David Livingstone leaves for Africa.United Kingdomsource
- 1840The first known photograph of Niagara Falls, a daguerreotype, is taken by English chemist Hugh Lee Pattinson.source
- 1840Peter Faber takes the first Danish photograph on record at Ulfeldts Plads in Copenhagen.Denmarksource
- 1840The largest recorded surface area of the Langjökull ice gap was recorded.Icelandsource
- 1840Lex Loci Report of October 1840 emphasised the importance and necessity of uniformity in the codification of Indian law, relating to crimes, evidences, and contract but it recommended that personal laws of Hindus and Muslims should be kept outside such codification.Indiasource
- 1840Samlade vitterhetsförsök by Ulrika Carolina WidströmSwedensource
- 1840Nyare dikter by Wilhelm von BraunSwedensource
- 18419 March - The first known photograph is taken in Wales, of Margam Castle by Calvert Jones.Walessource
- 1841The first Australian book for children was published in Sydney, A mother's offering to her children, by a 'lady long resident in New South Wales'. Although published anonymously, the author is Charlotte Barton.Australiasource
- 1841Uranium is first isolated, by Eugène-Melchior Péligot.Francesource
- 1841The first recorded mining in New Zealand, as outcrops of manganese are mined on the coast of Kawau Island.New Zealandsource
- 1841Diodes och Lydia by Wilhelmina StålbergSwedensource
- 1841Chemical Society of London founded by Thomas Graham.United Kingdomsource
- 184224 February: The Bay of Islands Observer begins publishing. The newspaper publishes its last issue on 27 October 1842.New Zealandsource
- 1842July 8 – The total solar eclipse of July 8, 1842 is visible from Asia.source
- 1842Julius von Mayer proposes that work and heat are equivalent.source
- 1842English palaeontologist Richard Owen coins the name Dinosauria, hence the Anglicized dinosaur.source
- 1842Linguistic purism in Icelandic: Jónas Hallgrímsson publishes a translation of a textbook on astronomy (Stjörnufræði) which became exemplary for later translations of scientific literature.Icelandsource
- 1842New pattern musket with percussion cap produced to replace the flintlock in the British Army.United Kingdomsource
- 1842Paleontologist Richard Owen coins the term name Dinosauria, hence the Anglicised dinosaur.United Kingdomsource
- 1842John Orlando Parry – Anticipations of SwitzerlandWalessource
- 1843March 11–14 – Eta Carinae flares, to become the second-brightest star.source
- 1843July 19 – Isambard Kingdom Brunel's SS Great Britain is launched from Bristol; it will be the first iron-hulled, propeller-driven ship to cross the Atlantic Ocean.source
- 1843August 1 – Brazil becomes the second country, after Great Britain, to issue nationally valid postage stamps, with the release of its Bull's Eye series.source
- 1843August 19 – Edgar Allan Poe's short story "The Black Cat" is first published in The Saturday Evening Post.source
- 1843October 16 – Irish mathematician William Rowan Hamilton discovers the calculus of quaternions and deduces that they are non-commutative.source
- 184317 December – Publication of Charles Dickens' novella A Christmas Carol by Chapman & Hall in London at his expense. It introduces the character Ebenezer Scrooge. Released on 19 December, the first printing sells out by Christmas Eve and inspires charitable giving.United Kingdomsource
- 1843December 19 – Charles Dickens's novella A Christmas Carol is first published in London, England. Released on December 19, it sells out by Christmas Eve.source
- 1843December 19 – "A Christmas Carol", by Charles Dickens, was first published on December 19, 1843, with the first edition sold out by Christmas Eve. By 1844, the novella had gone through 13 printings and continues to be a robust seller more than 175 years later.United Statessource
- 1843December 21 – The first total solar eclipse of Saros 139 occurs over southern Asia.source
- 1843The Quaker magazine The Friend is first published in London.source
- 1843James Joule experimentally finds the mechanical equivalent of heat.source
- 1843Pierre-Joseph van Beneden establishes the world's first marine laboratory in OstendBelgiumsource
- 1843Lord Metcalfe comes to Montreal.Canadasource
- 1843Ohm's acoustic law was proposed by German physicist Georg Ohm.Germanysource
- 1843(Colonies) Evidence Act (British statute)Indiasource
- 1843Hill & Adamson form Scotland's first photographic studio, on Calton Hill in Edinburgh.Scotlandsource
- 1843Förhoppingar by Sophie von KnorringSwedensource
- 18448 March - John Jones (Shoni Sguborfawr) embarks on the Blundell for transportation to Norfolk Island, his sentence for shooting at a man during the Rebecca Riots.Walessource
- 1844August 10 – German astronomer Friedrich Bessel deduces from the motion of the bright stars Sirius and Procyon that they have dark companions.source
- 184425 September: The New Zealand Gazette and Wellington Spectator prints its final issue. 369 issues were produced.New Zealandsource
- 1844Swedish chemistry professor Gustaf Erik Pasch is granted a privilege for his invention of a safety match.source
- 1844The Shipping Gazette and Sydney General Trade List is first published by Charles Kemp and John Fairfax.Australiasource
- 1844Undated – Aborigines' Evidence Act 1844 permitting Indigenous South Australians to give unsworn evidence in Court.Australiasource
- 1844Mary Ann Aldersey, an eccentric British woman, who opens a school for girls in NingboChinasource
- 1844Judicial Committee Act (British statute)Indiasource
- 184411–18 July – The 4th Scandinavian Scientist Conference is held in Oslo.Norwaysource
- 1844Maria Jane Williams - Ancient National Airs of Gwent and MorgannwgWalessource
- 18451 January – Lewis Edwards founds the periodical Y Traethodydd.Walessource
- 184513 February – Henrik Steffens, philosopher, scientist, and poet (born 1773)Norwaysource
- 1845August 28 – The journal Scientific American begins publication.source
- 184531 October – Johan Reinhardt, professor in zoology (born 1778)Norwaysource
- 1845Ephraim Bee reveals that the Emperor of China has given him a special dispensation: that he has entrusted him with certain sacred and mysterious rituals through Caleb Cushing, the U.S. Commissioner to China, to "extend the work and influence of the Ancient and Honorable Order of E Clampus Vitus" in the New World.source
- 1845Construction begins of the "Leviathan of Parsonstown", a telescope built by William Parsons, 3rd Earl of Rosse.Irelandsource
- 1845Skutterudite, a mineral containing nickel and iron, was discovered. The discovery was made in Skuterud Mines, Modum, Buskerud.Norwaysource
- 1845Publication of the New Statistical Account of Scotland is completedScotlandsource
- 1845Brita Sofia Hesselius opens a daguerreotype photographic studio in Karlstad and likely becomes the first professional female photographer in Sweden.Swedensource
- 1845John Mills (Ieuan Glan Alarch) — Y Beirniadur CymreigWalessource
- 1846June 20 – The first officially recorded baseball game using modern rules developed by Alexander Cartwright is played in Hoboken, New Jersey.United Statessource
- 18468 August – The planet Neptune is first observed but not recognised by James Challis, director of the Cambridge Observatory.United Kingdomsource
- 1846September 23 – Discovery of Neptune: The planet is observed for the first time by German astronomers Johann Gottfried Galle and Heinrich Louis d'Arrest, as predicted by British astronomer John Couch Adams and French astronomer Urbain Le Verrier.source
- 1846October 1 – Triton, Neptune's largest moon, is discovered by William Lassell 17 days after the discovery of Neptune.source
- 184610 October – William Lassell discovers Triton, one of the moons of Neptune.United Kingdomsource
- 184614-year-old James Clerk Maxwell's first scientific paper is presented to the Royal Society of Edinburgh.Scotlandsource
- 1847March – The first known publication of the classic joke "Why did the chicken cross the road?" occurs in The Knickerbocker, or New-York Monthly Magazine.source
- 18478 April - John Jones (Shoni Sguborfawr) is transferred from Norfolk Island to Tasmania.Walessource
- 184713 August – John Russell Hind makes the first British discovery of an asteroid, from London, 7 Iris. On 18 October he discovers 8 Flora.United Kingdomsource
- 1847Colombia Adopts The Decimal System.Colombiasource
- 1847Publishers Simms & McIntyre of Belfast introduce their Parlour Library of fiction reprints.Irelandsource
- 1847R. M. Ballantyne returns to Edinburgh from Canada.Scotlandsource
- 1847Thomas Guthrie publishes A Plea for Ragged Schools in Edinburgh.Scotlandsource
- 1847Jenny Lind returns to Sweden with a great tour.Swedensource
- 1847Reports of the Commissioners of Inquiry into the state of education in WalesWalessource
- 184825 April – Andrew Graham discovers asteroid 9 Metis from politician Edward Joshua Cooper's private Markree Observatory in County Sligo, the first (and until 2008 only) discovery from Ireland of a minor planet.Irelandsource
- 1848May 3 – The boar-crested Anglo-Saxon Benty Grange helmet is discovered in a barrow on the Benty Grange farm in Derbyshire.source
- 1848September 16 – William Cranch Bond and William Lassell discover Hyperion, Saturn's moon.source
- 184816 September – William Lassell independently co-discovers Hyperion, one of the moons of Saturn.United Kingdomsource
- 184817 September – The first attempt at photography is made in New Zealand. Lieutenant-Governor Eyre is unsuccessful in his attempt to take a daguerreotype of Eliza Grey, wife of Governor Grey.New Zealandsource
- 1848Undated - the Aboriginal Witnesses Act 1848. was enacted in South Australia.Australiasource
- 1848Hjalmar Hjorth Boyesen, author and college professor in America (d.1895)Norwaysource
- 1848Cambridge rules for Association football drawn up.United Kingdomsource
- 1848John Jenkins - National EducationWalessource
- 1849March 29 – Shipment containing Henry Box Brown departs Richmond for Philadelphia.United Statessource
- 1849April 12 – Astronomer Annibale de Gasparis discovers the asteroid 10 Hygiea.source
- 1849April 22 – The first Kennedy arrives in America.source
- 1849July 23 – French scientist Hippolyte Fizeau makes a measurement of the speed of light in air using a specially devised apparatus.source
- 1849William Thompson began publication (in London) of The Natural History of Ireland, with the first volume, on birds.Irelandsource
- 1849George Boole was appointed as first professor of mathematics at Queen's College, Cork.Irelandsource
- 1850May 7 – The brigantine USS Advance is loaned to the United States Navy.United Statessource
- 185016 May - Battleship Le Napoléon is launched.Francesource
- 1850May 25 – The hippopotamus Obaysch arrives at London Zoo from Egypt, the first seen in Europe since Roman times.source
- 185025 May – The hippopotamus Obaysch arrives at London Zoo from Egypt, the first to live in the British Isles since prehistoric times.United Kingdomsource
- 1850June – Harper's Magazine published as a new monthly in New York City.United Statessource
- 1850July 17 – Vega becomes the first star (other than the Sun) to be photographed.source
- 185017 December – The George Seymour arrives in Lyttelton.New Zealandsource
- 1850Astronomer Maria Mitchell becomes the first woman member of the American Association for the Advancement of Science.United Statessource
- 1851February 12 – Edward Hargraves claims to have found gold in Australia.source
- 185112 February — Edward Hargraves finds evidence of gold near Bathurst, but no announcement is made at that time.Australiasource
- 18512 May— Edward Hargraves proclaims the discovery of gold at Ophir, New South Wales. The gold was actually discovered by William Tom and John Lister, between 7 and 12 April 1851.Australiasource
- 1851July 28 – Total solar eclipse visible in Canada, Greenland, Iceland and Northern Europe, the first solar eclipse to be photographed.source
- 1851July 29 – Annibale de Gasparis, in Naples, Italy discovers asteroid 15 Eunomia.source
- 1851October 24 – Ariel and Umbriel, moons of Uranus, are discovered by William Lassell.source
- 185124 October – Ariel and Umbriel, moons of Uranus, are discovered by William Lassell.United Kingdomsource
- 1851Surviving 1851 Census Returns of IrelandIrelandsource
- 1851Publication of Daniel Wilson's The Archaeology and Prehistoric Annals of Scotland, which introduces the word prehistoric into the English archaeological vocabulary.Scotlandsource
- 1851All Swiss weights and measures are unifiedSwitzerlandsource
- 1852March 17 – Annibale de Gasparis discovers the asteroid Psyche from the north dome of the Astronomical Observatory of Capodimonte in Naples.source
- 1852April – Samuel Orchart Beeton begins publication of The Englishwoman's Domestic Magazine, the first for women.United Kingdomsource
- 1852September 19 – Annibale de Gasparis discovers the asteroid Massalia from the north dome of the Astronomical Observatory of Capodimonte in Naples.source
- 18524 October – Sweden and Finland 'skip' 10 days in order to align with the spring equinox according to the Gregorian calendar.Swedensource
- 1852October 23 – The conjecture of the four color theorem is first proposed, as student Francis Guthrie of University College London presents the question of proving, mathematically, that no more than four colors are needed to give separate colors to bordering shapes on a map (the theorem is not proven for almost 123 years, until 1976).source
- 1852October – The Bank of Montreal issues notes like the Bank of England's; denomination water-marked.Canadasource
- 1852Sophia Posse takes over the girls' school Hammarstedtska skolan.Swedensource
- 1852John Williams (Glanmor) – Awstralia a'r Cloddfeydd AurWalessource
- 1853September 19 – English missionary Hudson Taylor first leaves for China.source
- 1853October 4 – On the east coast of the United States, Donald McKay launches the Great Republic, the world's biggest sailing ship, which at 4,500 tons is too large to be successful.source
- 185315 December – The Sierra redwood Sequoiadendron giganteum is introduced to England as Wellingtonia by William Lobb.United Kingdomsource
- 1853French diplomat Arthur de Gobineau begins publication of his An Essay on the Inequality of the Human Races (Essai sur l'inégalité des races humaines), an early example of scientific racism.source
- 1853National Herbarium of New South Wales establishedAustraliasource
- 1853National Herbarium of Victoria establishedAustraliasource
- 1853Arthur de Gobineau begins publication of his An Essay on the Inequality of the Human Races (Essai sur l'inégalité des races humaines).Francesource
- 1853Grunerite is discovered and named after Emmanuel-Louis Gruner, the Swiss-French chemist who first analyzed itSwitzerlandsource
- 1853William Spurrell — English-Welsh DictionaryWalessource
- 1854April - The Chile 1854 Census is conducted.Chilesource
- 185422 July – Discovery of the asteroid 30 Urania by John Russell Hind.United Kingdomsource
- 1854August 9 – Walden first published.United Statessource
- 185410 August – Merchant Shipping Act 1854 introduces official numbers for ships, revises calculations of tonnage, vests management of Scottish lighthouses in the Northern Lighthouse Board and provides for rewards to lifesavers leading to creation of the Sea Gallantry Medal.United Kingdomsource
- 1854Professor Benjamin Silliman of Yale University is the first person to fractionate petroleum into its individual components, by distillation.source
- 1854Alexander Cunningham, a British army engineer with the Bengal Engineer Group, published LADĀK: Physical, Statistical, and Historical with Notices of the Surrounding CountriesIndiasource
- 1854Dadabhai Naoroji founded a Gujarati fortnightly publication, the Rast Goftar ('The Truth Teller'), to clarify Zoroastrian concepts and promote Parsi social reformsIndiasource
- 1854Calcutta Survey first issued Inverted Head 4 Annas postage stampsIndiasource
- 1854c. October – George Airy calculates the mean density of the Earth by measuring the gravity in a coal mine in South Shields.United Kingdomsource
- 1855April 18 – The Bordeaux Wine Official Classification of 1855, requested by Napoleon III for the Exposition Universelle (opening May 15), first appears.source
- 185518 April – The Bordeaux Wine Official Classification of 1855, requested by Napoleon III for the Exposition Universelle (opening 15 May), first appears.Francesource
- 185525 July – Robert Napier and Sons launch RMS Persia on the River Clyde, the first iron-hulled ship for the Cunard Line and the world's largest at this date (3300 grt, 398 ft (121 m)).Scotlandsource
- 1855August 1 – Monte Rosa, the second-highest summit in the Alps, is first ascended.source
- 185527 November – Christian Winther publishes Hjortens Flugt. Et Digt.Denmarksource
- 1855The cocaine alkaloid is first isolated by German chemist Friedrich Gaedcke.source
- 1855Approximate date – the Corraghy Heads and Corleck Head are discovered.Irelandsource
- 1855Olea Crøger, folk music collector (born 1801)Norwaysource
- 1855Botanist Carl Meissner gives Grevillea ramosissima its current name and first describes Grevillea thyrsoidesSwitzerlandsource
- 1855James Clerk Maxwell unifies electricity and magnetism into a single theory, classical electromagnetism, thereby showing that light is an electromagnetic wave.United Kingdomsource
- 1856January 8 – Borax deposits are discovered in large quantities by John Veatch in California.source
- 185624 July – HDMS Heimdal is launched at Nyholm in Copenhagen.Denmarksource
- 1856November – James Clerk Maxwell takes up an appointment as Professor of Natural Philosophy at Marischal College, Aberdeen.Scotlandsource
- 1856November – The first known rules of modern croquet are registered by Isaac Spratt in London.United Kingdomsource
- 1856Gregor Mendel starts his research on genetics.source
- 1856The Great Trigonometrical Survey of India officially gives 'Peak XV' (later to be named Mount Everest) the height of 29,002 ft. 'Peak IX' (Kangchenjunga), previously thought to be the world's highest, is confirmed as 28,156 ft.source
- 1856While surveying lands recently acquired by the Crown under the Robinson-Huron Treaty, British land surveyor Albert Salter observes a significant magnetic anomaly near the future site of Creighton Mine in modern-day Northern Ontario. This is an early scientific observation of the vast mineral resources of the Sudbury Basin.Canadasource
- 1856Foreign Tribunals Evidence Act (British statute)Indiasource
- 185612–18 July – The 7th Scandinavian Scientist Conference is held in Oslo.Norwaysource
- 1856Date unknown - Revision of the Infanticide Act (Sweden).Swedensource
- 1856Carl Meissner discovers Conospermum mitchelliiSwitzerlandsource
- 1857March 15 - President Comonfort signs the law adopting the metric systemMexicosource
- 1857March 23 – Elisha Otis' first elevator is installed (at 488 Broadway, New York City).source
- 1857March 25 – The phonautograph is patented by French typesetter Édouard-Léon Scott de Martinville. It is the earliest known device for recording sound.source
- 185713 August — Eugene Goddard crosses the Menai Strait in his gas balloon Aurora from Caernarfon Castle to Llanidan.Walessource
- 1857W. C. Stewart publishes The Practical Angler.Scotlandsource
- 1857Owen Wynne Jones — Dafydd LlwydWalessource
- 1858February 11 – Lourdes apparitions: Pauper girl Bernadette Soubirous of Lourdes, fourteen, has a vision at the grotto of Massabielle, the first in a series of eighteen events which will come to be regarded as Marian apparitions.source
- 185811 February - Lourdes apparitions: Pauper girl Bernadette Soubirous of Lourdes, 14, has a vision at the grotto of Massabielle, the first in a series of eighteen events (up to 16 August) which will come to be regarded as Marian apparitions.Francesource
- 1858June 2 – Comet Donati, the first comet to be photographed, is discovered by Giovanni Battista Donati, and remains visible for several months afterwards.source
- 1858July 1 – A joint presentation of papers by Darwin and Alfred Russel Wallace, announcing a theory of evolution by natural selection, are read at London's Linnean Society.source
- 18581 July – Papers by Charles Darwin and Alfred Russel Wallace announcing a theory of evolution by natural selection read at the Linnean Society of London.United Kingdomsource
- 1858August – The first aerial photography is carried out by Nadar, from a moored balloon in France.source
- 1858November 16 – The 2,400,000th day of the Epoch of the Julian day is reached.source
- 1858Loke Yew leaves China for British MalayaChinasource
- 1858Creation of K. Rudzki i S-ka (in Warsaw)Russiasource
- 1858Abraham Lincoln and others observe Comet Donati.United Statessource
- 1858Mirror galvanometer invented by William Thomson, 1st Baron Kelvin.United Kingdomsource
- 1858Alfred Russel Wallace — On the Tendency of Varieties to Depart Indefinitely From the Original TypeWalessource
- 1858Morgan Howells — Gweithiau Morgan Howells ... pregethau a thraethodau (posthumously published)Walessource
- 1859March 26 – French amateur astronomer Edmond Modeste Lescarbault claims to have noticed a planet closer to the Sun than Mercury (later named Vulcan).source
- 185926 March - Attempting to explain Mercury's solar orbit, mathematician Urbain Le Verrier has proposed the existence of a hypothetical planet, Vulcan, inside its orbit and amateur astronomer Edmond Modeste Lescarbault claims to have observed it on this date.Francesource
- 185921 April – the Dunfermline Press begins publication.Scotlandsource
- 1859June 18 – Aletschhorn, the second summit of the Bernese Alps, is first ascended.source
- 18591 September – Astronomer Richard Carrington makes the first observation of a solar flare.United Kingdomsource
- 18596 October – Thomas Austin takes 24 rabbits and 5 hares to Australia in order to release them there as a game. They will multiply exponentially.Australiasource
- 1859November 24 – The French Navy's La Gloire, the first ocean-going ironclad warship in history, is launched.source
- 185924 November - The French Navy's La Gloire ("Glory"), the first ocean-going ironclad warship in history, is launched.Francesource
- 1859November – Bernhard Riemann publishes On the Number of Primes Less Than a Given Magnitude. In his paper there is an incidental comment that later becomes the Riemann Hypothesis, one of the most important unsolved problems in Mathematics.source
- 1859British Law Ascertainment Act (British statute)Indiasource
- 1859Evidence By Commission Act (British statute)Indiasource
- 1860January 2 – The astronomer Urbain Le Verrier announces the discovery of a hypothetical planet Vulcan at a meeting of the French Academy of Sciences in Paris, France.source
- 186025 January – HMS Prince of Wales, a 121-gun screw-propelled first-rate ship of the line is launched at Portsmouth Dockyard.United Kingdomsource
- 1860April 9 – French typesetter Édouard-Léon Scott de Martinville creates a recording of the French folk song Au clair de la lune with his phonautograph, producing the world's earliest known intelligible sound recording of the human voice (however, it was not rediscovered until 2008).source
- 18609 April - Typesetter Edouard-Leon Scott de Martinville sings "Au clair de la lune" into his phonautograph, producing the world's earliest known sound recording of a song. However, it would not be converted back into audible sound until 2008.Francesource
- 186020 November – The frigate Jylland is launched at Holmen in Copenhagen.Denmarksource
- 186029 December – The world's first ocean-going (all) iron-hulled and armoured battleship, HMS Warrior is launched on the Thames.United Kingdomsource
- 1860Discovery of the chemical elements: Robert Bunsen discovers caesium and rubidium.source
- 1860German chemist Albert Niemann makes a detailed analysis of the coca leaf, isolating and purifying the alkaloid, which he calls cocaine.source
- 1860Chalon head postage stamp issued in New BrunswickCanadasource
- 18608–14 July – The 8th Scandinavian Scientist Conference is held in Copenhagen.Denmarksource
- 1860Erlenmeyer flask is created by Emil Erlenmeyer.Germanysource
- 1860Folklorist John Francis Campbell begins publication of Popular Tales of the West Highlands in Edinburgh.Scotlandsource
- 186113 March – Tsushima incident: the Russian corvette Posadnik arrives at Tsushima Island in the Korea Strait, Japan, provoking a reaction from the Japan.Russiasource
- 1861March 30 – Discovery of the chemical elements: British chemist William Crookes announces his discovery of thallium.source
- 186130 March – William Crookes announces his discovery of thallium.United Kingdomsource
- 1861April 26 – Giovanni Schiaparelli discovers the asteroid 69 Hesperia.source
- 1861May 13 – Comet C/1861 J1 (the "Great Comet of 1861") is discovered from Australia.source
- 186113 May – The Great Comet of 1861 is discovered by John Tebbutt of Windsor, New South Wales.Australiasource
- 1861May 17 – Scottish-born physicist James Clerk Maxwell demonstrates the principle of permanent three-colour photography in a lecture at the Royal Institution in London using a photograph captured by Thomas Sutton.source
- 186117 May – Scottish-born physicist James Clerk Maxwell demonstrates the principle of three-colour photography in a lecture at the Royal Institution in London using a photograph captured by Thomas Sutton.United Kingdomsource
- 1861June 9 – Règlement Organique: With the approval of European powers, the Mount Lebanon Mutasarrifate is established as a semi-autonomous sub-division separate from the Sidon Eyalet. An Ottoman Armenian, Davud Pasha, is appointed Mutasarrıf by the Ottoman Sultan.source
- 1861August 1 – The first public weather forecast: measured and predicted correctly by Admiral Robert FitzRoy in Britain.source
- 1861August 15 – First description of Archaeopteryx, based on a feather found in Bavaria; in September the first complete identified skeleton is found near Langenaltheim in Germany.source
- 186115 August – First description of Archaeopteryx, based on a feather found in Bavaria; in September the first complete identified skeleton is found near Langenaltheim.Germanysource
- 1861August 19 – Weisshorn, the fifth highest summit in the Alps, is first ascended.source
- 1861Foreign Law Ascertainment Act (British statute)Indiasource
- 1862January 31 – Alvan Graham Clark makes the first observation of Sirius B, a white dwarf star, through an eighteen-inch telescope at Northwestern University in Illinois.source
- 186229 July – Confederate commerce raider CSS Alabama is launched clandestinely at Birkenhead by John Laird Sons and Company.United Kingdomsource
- 1862David Kirkaldy publishes Results of an Experimental Inquiry into the Comparative Tensile Strength and other properties of various kinds of Wrought-Iron and Steel in Glasgow describing his pioneering work in tensile testing.Scotlandsource
- 18631 January – The Torrens title system is introduced in New South Wales with the commencement of the Real Property Act 1862.Australiasource
- 1863January 3 – The Thomas Nast drawing of the modern Santa Claus appears on the cover of Harper's Weekly, although Santa existed previously.United Statessource
- 18636 May – HDMS Rolf Krake is launched at Nyholm in Copenhagen.Denmarksource
- 1863June 27 – The Chōshū Five leave Japan secretly to study at University College London, which is part of the ending of sakoku.source
- 1863August 27–29 – Astronomische Gesellschaft in Heidelberg is founded, the world's second oldest astronomical society.Germanysource
- 1863September 5 — Louis-Victor Sicotte appointed a puisne judge of the Superior Court for Saint-Hyacinthe DistrictCanadasource
- 1863December 19 – Linoleum is patented in the United Kingdom.source
- 1863Richard Owen publishes the first description of a fossilised bird, Archaeopteryx.source
- 1863The Paris Observatory begins to publish weather maps.Francesource
- 1863Max Schultze advances cell theory with the observation that animal and vegetable protoplasm are identical.Germanysource
- 1863The Newdigate Prize is awarded to Thomas Llewellyn Thomas.Walessource
- 1864May 7 – The clipper ship City of Adelaide is launched in Sunderland, England. By the 21st century, she will be the world's oldest surviving clipper of only two (Cutty Sark being the other).source
- 1864June 30 – President Abraham Lincoln signs the Yosemite Grant Act, precursor to Yosemite National Park.United Statessource
- 1864October 10 – October 27: Quebec Conference, identified 72 resolutions for the British North America Act, 1867Canadasource
- 186418 October – HDMS Peder Skram is launched at Nyholm in Copenhagen.Denmarksource
- 1864October 30 – An annular solar eclipse occurs, the 42nd solar eclipse of Solar Saros 131.source
- 1864December 8 – James Clerk Maxwell presents his paper, A Dynamical Theory of the Electromagnetic Field, to the Royal Society in London, treating light as an electromagnetic wave.source
- 1864Lantern wins the Melbourne Cup.Australiasource
- 1864Hugo Erfurt invents Ingrain wallpaperGermanysource
- 1864Australian magpie introduced to New ZealandNew Zealandsource
- 1864Queen Louise and Princess Louise take lessons in ice skating from the pioneer Nancy Edberg, making ice skating socially acceptable for females.Swedensource
- 1864Alfred Russel Wallace - The Origin of Human Races and the Antiquity of Man Deduced from the Theory of Natural SelectionWalessource
- 1865February 8 & March 8 – Gregor Mendel reads his paper on Experiments on Plant Hybridization at two meetings of the Natural History Society of Brünn in Moravia, subsequently taken to be the origin of the theory of Mendelian inheritance.source
- 1865June 26 – Jumbo, a young male African elephant, arrives at London Zoo and becomes a popular attraction.source
- 186526 June – Jumbo, a young male African elephant, arrives at London Zoo and becomes a popular attraction.United Kingdomsource
- 1865June–August – English polymath Francis Galton first describes eugenics.source
- 1865June–August – Francis Galton formulates eugenics.United Kingdomsource
- 186530 August: The New Zealand Spectator and Cook's Strait Guardian publishes its last issue. It began in 1844.New Zealandsource
- 1865September – John Henry Walsh (writing as 'Stonehenge' in the magazine The Field) gives the first definition of a dog breed standard (for the pointer) based on physical form.United Kingdomsource
- 1865The New Zealand Exhibition in Dunedin runs from 12 January until 6 May 1865.New Zealandsource
- 1865John Jones (Mathetes) — Pregeth i Fyfyrwyr Coleg Hwlffordd ...Walessource
- 1866March 31 – A total lunar eclipse occurs.source
- 1866June 5 – Calculations indicate Pluto (not known at this time) reaches its only aphelion (furthest point from the Sun) between 1618 and August 2113.source
- 1866July 28 – The Metric Act of 1866 becomes law and legalizes the use of the metric system for weights and measures in the United States.United Statessource
- 186622 August – SS Ottawa departs from Copenhagen as the first emigration ship between Copenhagen and New York City.Denmarksource
- 1866Marcus Jastrow arrives in the United States to become rabbi of Congregation Rodeph Shalom in Philadelphia.source
- 1866Alfred Nobel – invents dynamite in Germany.Germanysource
- 1866Order of the Star of India was expanded to three classesIndiasource
- 1866New Zealand Derby winner: NebulaNew Zealandsource
- 1866The last Kirkcaldy whaler, The Brilliant, is sold to Peterhead.Scotlandsource
- 1866Alfred Nobel invented dynamite in 1866.Swedensource
- 1866Rees Howell Gronow — Last RecollectionsWalessource
- 18671 April–3 November - Exposition Universelle in Paris.Francesource
- 186717 May – New criminal code published.Belgiumsource
- 186722 May – Maria Fedeorowna arrives to Copenhagen.Denmarksource
- 1867June 20 – The first recorded association football match in Argentina takes place in Buenos Aires.source
- 186714 July – Swedish chemist Alfred Nobel demonstrates dynamite in a quarry in Redhill, Surrey, having patented it in the UK on 7 May.United Kingdomsource
- 1867South African diamond fields are discovered.source
- 1867Date unknown - Volume I of Das Kapital by Karl Marx was published in Hamburg by Verlag Otto MeisnerGermanysource
- 1867Royal Irish Constabulary granted its "Royal" prefix by Queen Victoria.Irelandsource
- 1867New Zealand Cup winner: MagentaNew Zealandsource
- 1867The Bronze Age cairns at Llanmadoc Hill are excavated and finds recorded.Walessource
- 18684 February - the first Uruguayan Mining Code is passed, approved by Law No. 920 of 4 February 1868.Uruguaysource
- 1868February – The Benjamin Franklin "Z Grill" postage stamp is issued; it will be among the rarest ever.United Statessource
- 18688 August – HDMS Lindormen is launched at Nyholm in Copenhagen.Denmarksource
- 1868August 18 – The element later named as helium is first detected in the spectrum of the Sun's chromosphere, by French astronomer Jules Janssen, during a total eclipse in Guntur, British India, but is assumed to be sodium.source
- 186818 August - The element later named as helium is first detected in the spectrum of the Sun's chromosphere by astronomer Jules Janssen during a total eclipse in Guntur, India, but assumed to be sodium (on 20 October English astronomer Norman Lockyer identifies it).Francesource
- 1868August – meteorological observatory set up on Valentia Island.Irelandsource
- 1868October 20 – English astronomer Norman Lockyer observes and names the D 3 Fraunhofer line in the solar spectrum, and concludes that it is caused by a hitherto unidentified element, which he later names helium.source
- 186820 October – astronomer Norman Lockyer observes and names the D 3 Fraunhofer line in the solar spectrum and concludes that it is caused by a hitherto unidentified chemical element which he later names helium.United Kingdomsource
- 1868November 2 – Time zone: New Zealand officially adopts a standard time, to be observed nationally.source
- 1868Thomas Henry Huxley discovers what he thinks is primordial matter and names it bathybius haeckelii (he admits his mistake in 1871).source
- 1868Documentary Evidence Act (British statute)Indiasource
- 1868John Ceiriog Hughes – Oriau eraillWalessource
- 18699 January – The British clipper ship Thermopylae arrives in Melbourne, having sailed from London in the record time of 64 days.Australiasource
- 1869March 1 – (O. S. February 17) – Dmitri Mendeleev finishes his design of the first periodic table and sends it for publishing.source
- 1869March 18 (O. S. March 6) – Dmitri Mendeleev makes a formal presentation of his periodic table to the Russian Chemical Society.source
- 1869September 20 – Ezo was given its present name, Hokkaido (北海道 Hokkaidō, literally "Northern Sea Region").Japansource
- 186922 November – the clipper ship Cutty Sark is launched in Dumbarton, one of the last clippers built and the only one to survive in the UK.Scotlandsource
- 186922 November – clipper ship Cutty Sark is launched in Dumbarton, Scotland; she is one of the last clippers built, and the only one to survive in the UK.United Kingdomsource
- 1869November 23 – In Dumbarton, Scotland, the clipper ship Cutty Sark is launched (it is one of the last clippers built, and the only one to survive in the United Kingdom).source
- 1869Friedrich Miescher purifies nuclein, which was then identified as deoxyribonucleic acid (DNA).source
- 1869Marcus Jastrow arrives in the United States to become rabbi of Congregation Rodeph Shalom in Philadelphia.United Statessource
- 1869J. H. Clark – History of MonmouthshireWalessource
- 1870March 18 – Female Infanticide Prevention Act, 1870, passed in British India by Natalia Fish.source
- 187017 May – The turreted ironclad Gorm is launched from the Naval Dockyard in Copenhagen.Denmarksource
- 1870July 28 – Start of Solar Saros 153. The final eclipse in this series will be in 3114.source
- 187027 August – White Star's first ocean liner RMS Oceanic is launched by Harland and Wolff in Belfast.Irelandsource
- 1870Ludimar Hermann observes the Hermann grid illusion.Germanysource
- 1870Rudolf Clausius proves the scalar virial theorem.Germanysource
- 1870Torrens system of registered land titles adopted.New Zealandsource
- 1870In India, Timothy Richards Lewis discovers a nematoid worm, which he calls Filaria sanguinis hominis (later "Wuchereria bancrofti").Walessource
- 1871February 21 – The District of Columbia Organic Act of 1871 is signed into law by U.S. President Ulysses S. Grant.source
- 1871February 21 – District of Columbia Organic Act of 1871United Statessource
- 1871September 2 – Whaling disaster of 1871: The Comet, a brig used by whalers, becomes the first of 33 ships to be crushed in the Arctic ice by an early freeze. Remarkably, all 1,219 people on the abandoned ships are rescued without a single loss of life.source
- 1871October 5 – The Società degli Spettroscopisti Italiani (laterSocietà Astronomica Italiana) is established in Rome, the first scientific organisation in the world dedicated to astrophysics.source
- 187124 October – The Argentine National Observatory is founded by President Domingo F. Sarmiento and the North American astronomer Benjamin Apthorp Gould.Argentinasource
- 1871November 17 – George Biddell Airy presents his discovery that astronomical aberration is independent of the local medium.source
- 187117 November – George Biddell Airy presents his discovery that astronomical aberration is independent of the local medium.United Kingdomsource
- 1871When an 83.50 carats diamond is discovered, a diamond rush results and the town of New Rush springs up.South Africasource
- 1871Modern "neoclassical economics" is initiated by publication of William Stanley Jevons's Theory of Political Economy and Carl Menger's Principles of Economics (Grundsätze der Volkswirtschaftslehre).source
- 1871Alfred Stevens, The Psyché (My Studio) (c. 1871)Belgiumsource
- 1872February 4 – A great solar flare, and associated geomagnetic storm, makes northern lights visible as far south as Cuba.source
- 1872May 4 – The magazine Popular Science is first published in the United States.source
- 187217 November – Edvard Engelsaas, speed skater and world championNorwaysource
- 1872November 27 – A meteor shower display of Andromedids is seen over France.source
- 187227 November - Meteor shower display over France.Francesource
- 1872November 28 – Geologist Clarence King uncovers the diamond hoax in Wyoming in The New York Times.United Statessource
- 187212 December – The central battery ironclad Odin is launched from the Naval Dockyard in Copenhagen.Denmarksource
- 187212 December – a meteorite strikes Earth near Banbury.United Kingdomsource
- 1872Richard Dedekind publishes Stetigkeit und irrationale Zahlen, a theory of irrational numbers.Germanysource
- 1872Polyvinyl chloride is accidentally synthesised by German chemist Eugen Baumann.Germanysource
- 1872New Zealand Cup winner – DetractorNew Zealandsource
- 1873January 1 – Japan adopts the Gregorian calendar.source
- 1873July 5 – New Rush in Griqualand West, South Africa, is renamed Kimberley.source
- 1873July 5 – New Rush in Griqualand West is renamed Kimberley after John Wodehouse, 1st Earl of Kimberley.South Africasource
- 1873Nine Pekin ducks are imported to Long Island (the first in the United States).source
- 1873Hermann von Helmholtz is awarded the Copley Medal "for his researches in physics and physiology".Germanysource
- 1873The armoured frigate SMS Preußen is launched.Germanysource
- 1873Edinburgh Evening News first publishedScotlandsource
- 1873Lexicographer James Murray publishes Dialect of the Southern Counties of ScotlandScotlandsource
- 1874Charles Taze Russell and the Bible Student movement claim this year marks the invisible return of Jesus Christ to earth.source
- 18751 April – The Times publishes the first daily weather map.United Kingdomsource
- 1875September 11 – Egypt adopts the Gregorian calendar; replacing the Coptic/Alexandrian calendar (based on the ancient Egyptian calendar) which had been the official calendar since the Roman period.source
- 1875Gallium is discovered by Paul Emile Lecoq de Boisbaudran.Francesource
- 1875The weekly medical journal, Deutsche Medizinische Wochenschrift, is established in Germany by Paul Börner.Germanysource
- 1875India Meteorology Department was established on 15 January.Indiasource
- 1875The Metric system was introduced and replaced the old measurement units (de jure).Norwaysource
- 1875Creation of the Lisbon Geographic Society.Portugalsource
- 1875Alfred Nobel invents the Gelignite.Swedensource
- 1875Robert Griffiths becomes the first secretary of the tonic solfa college.Walessource
- 1876January 1 – The Bass Brewery Red Triangle becomes the world's first registered trademark symbol, in the United Kingdom.source
- 18761 January – the Bass Brewery Red Triangle becomes the first registered trademark symbol, under the Trade Mark Registration Act 1875.United Kingdomsource
- 1876American librarian Melvil Dewey first publishes the Dewey Decimal Classification system.source
- 1876March – Librarian Melvil Dewey first publishes the Dewey Decimal Classification system.United Statessource
- 1877August 12 – American astronomer Asaph Hall discovers Deimos, the outer moon of Mars.source
- 1877August 18 – Asaph Hall discovers Phobos, the inner moon of Mars.source
- 1877November 21 – Thomas Edison announces his invention of the phonograph, a machine that can record sound, considered his first great invention. Edison demonstrates the device for the first time on November 29.source
- 1877November 21 – Thomas Edison announces his invention of the phonograph, a machine that can record sound, considered Edison's first great invention. Edison demonstrates the device for the first time on December 6.United Statessource
- 1877Louis Melsens becomes the second person to receive the Guinard Prize by the Brussels Academy, a Belgian award, given every 5 years since 1872, to the scientist who has written the best work or created the best invention to improve the material or intellectual position of the working class.Belgiumsource
- 1877Robert Louis Stevenson's first published works of fiction appear in magazines.Scotlandsource
- 1877A breed register for the Clydesdale horse is established.Scotlandsource
- 1877A publication about birth control. View original copy.United Kingdomsource
- 1877Publication date of Edward Lear's Laughable Lyrics (actually issued December 1876).United Kingdomsource
- 187811 February – first weekly weather report published in the UK.United Kingdomsource
- 18789 May – The panserbatteri Helgoland is launched.Denmarksource
- 1878October 14 – The world's first recorded floodlit football fixture is played at Bramall Lane, in Sheffield, England.source
- 187822 November - The Metric system is introduced in SwedenSwedensource
- 187818 December – Joseph Swan of Newcastle announces his invention of an incandescent light bulb.United Kingdomsource
- 18783–9 July – The 11th Scandinavian Scientist Conference is held in Copenhagen.Denmarksource
- 1878Elders' Widows' Fund (India) Act (British statute)Indiasource
- 1878Territorial Waters Jurisdiction Act (British statute)Indiasource
- 1878William Crookes invents the Crookes tube which produces cathode rays.United Kingdomsource
- 1879January 1 – The Specie Resumption Act takes effect. The United States Note is valued the same as gold, for the first time since the American Civil War.source
- 1879January 1 – The Specie Resumption Act takes effect: the Greenback is valued the same as gold for the first time since the American Civil War.United Statessource
- 1879February 8 – At a meeting of the Royal Canadian Institute, engineer and inventor Sandford Fleming first proposes the global adoption of standard time.source
- 187914 April – The first use of a parachute in Australia occurs when Henri L 'Estrange's balloon ruptures above Melbourne's Agricultural Showgrounds.Australiasource
- 18796 June – William Denny and Brothers launch the world's first ocean-going ship to be built of mild steel, the SS Rotomahana, at Dumbarton.United Kingdomsource
- 1879July 1 – American Restorationist Charles Taze Russell publishes the first issue of the monthly Zion's Watch Tower and Herald of Christ's Presence which, as The Watchtower, will become the most widely circulated magazine in the world.source
- 1879July 1 – Restorationist Charles Taze Russell publishes the first issue of the monthly Zion's Watch Tower and Herald of Christ's Presence which, as The Watchtower, will become the most widely circulated magazine in the world.United Statessource
- 18796 September – first publication of a story by Arthur Conan Doyle, "The Mystery of Sasassa Valley" in Chambers's Journal.Scotlandsource
- 1879October 28 – The Hall effect is discovered by Edwin Hall at Johns Hopkins University in the United States.source
- 1879December 31 – Thomas Edison demonstrates incandescent lighting to the public for the first time, in Menlo Park, New Jersey.source
- 1879Wilhelm Wundt establishes the first psychological research laboratory, at the University of Leipzig.source
- 1879The Stefan–Boltzmann law is discovered by Jozef Stefan.source
- 1879D. Walter Thomas & Edward Hughes – The Cymric languageWalessource
- 1880February 24 – The SS Columbia, which will be the first outside usage of Thomas Edison's incandescent light bulb, is launched at the Delaware River Iron Ship Building and Engine Works of John Roach & Sons in Chester, Pennsylvania.source
- 1880February – The journal Science is first published, with financial backing from Thomas Edison.United Statessource
- 1880July – John Venn popularises Venn diagrams.source
- 188030 September – HDMS Tordenskjold is launched at Nyholm in Copenhagen.Denmarksource
- 1880September 30 – Amateur astronomer Henry Draper takes the first ever photograph of the Orion Nebula.United Statessource
- 18809 December – Jens Peter Jacobsen's Niels Lyhne by Gyldendal.Denmarksource
- 1880Piezoelectricity is discovered by Pierre Curie and Jacques Curie.source
- 1880Discovery of piezoelectricity by Pierre Curie and Jacques Curie.Francesource
- 1880The Department of Scientific Temperance Instruction of the Women's Christian Temperance Union is established.United Statessource
- 1881June – Oscar Wilde's Poems published in London.Irelandsource
- 188122 October – Tit-Bits weekly digest magazine founded by George Newnes.United Kingdomsource
- 1881October 29 – Judge magazine is first published.United Statessource
- 1881Some Vatican archives are opened to scholars for the first time.source
- 1881The Pali Text Society is founded by British scholar Thomas William Rhys Davids, for the study of Pali (Ceylonese) texts.source
- 1881Gustave Den Duyts, Panoramic View of Ghent (c. 1881)Belgiumsource
- 1881Judicial Committee Act (British statute)Indiasource
- 1882August 5 – Standard Oil of New Jersey is established.United Statessource
- 1882September 7 – W.H. Finlay of Cape Town's Royal Observatory is first to record observations of the Great Comet of 1882.South Africasource
- 1882September 18 – Great Comet of 1882: Her Majesty's Astronomer at the Cape, David Gill, reports watching the comet rise a few minutes before the Sun, describing it as "The nucleus was then undoubtedly single, and certainly rather under than over 4″ in diameter; in fact, as I have described it, it resembled very much a star of the 1st magnitude seen by daylight."source
- 1882December 6 – A transit of Venus, the last until 2004, occurs.source
- 18826 December – A rare transit of Venus across the disc of the Sun is visible from Australia, and many scientific parties arrive from around the world to observe and record the transit. The next occurrence was June 2004.Australiasource
- 1882The first International Polar Year, an international scientific program, begins.source
- 1882Documentary Evidence Act (British statute)Indiasource
- 1882Lewis Campbell publishes The Life of James Clerk Maxwell, with a Selection from his Correspondence and Occasional Writings and a Sketch of his Contributions to Science, including some of Maxwell's verses.Scotlandsource
- 1882American scholar Francis James Child begins publication of The English and Scottish Popular Ballads, the Child Ballads.Scotlandsource
- 1882Archaeologist Robert Munro publishes Ancient Scottish Lake Dwellings or Crannogs.Scotlandsource
- 1882The Society for Psychical Research is founded by Henry Sidgwick.United Kingdomsource
- 18831 January – Augustus Pitt Rivers takes office as Britain's first Inspector of Ancient Monuments.United Kingdomsource
- 1883March 2 – The Hong Kong Observatory is established.source
- 1883April 30 – New York Governor Grover Cleveland signs a bill authorizing protection of land for Niagara Falls State Park, which would eventually lead to the Niagara Reservation being established two years later in 1885.United Statessource
- 188311 October – The Russian tsar family departs from Copenhagen.Denmarksource
- 1883Fernand Khnopff, Listening to Schumann; Portrait de Mademoiselle Van der HechtBelgiumsource
- 1883The Schotten-Baumann reaction is first described in 1883 by German chemists Carl Schotten and Eugen Baumann.Germanysource
- 1884January – Arthur Conan Doyle's anonymous story "J. Habakuk Jephson's Statement" appears in the Cornhill Magazine (London). Based on the disappearance of the crew of the Mary Celeste in 1872, many of the fictional elements introduced by Doyle come to replace the real events in the popular imagination.source
- 1884October 22 – The International Meridian Conference meeting in Washington, D.C., fixes the Greenwich meridian as the world's prime meridian (voted on October 13).source
- 188422 October – The International Meridian Conference meeting in Washington, D.C., adopts the Greenwich meridian as the world's prime meridian (voted on 13 October).United Kingdomsource
- 1884October – International Meridian Conference in Washington, D.C., fixes the Greenwich meridian as the world's prime meridian.United Statessource
- 1884The Stefan–Boltzmann law is reformulated by Ludwig Boltzmann.source
- 1884The Thorvaldsen Exhibition Medal is awarded to Christian Zacho for the painting Quiet waters in Dyrehaven and to August Jerndorff for a portrait painting (possibly Anne Gerricke).Denmarksource
- 1884Koch's postulates are four criteria designed to establish a causative relationship between a microbe and a disease. The postulates were formulated by Robert Koch and Friedrich Loeffler in 1884.Germanysource
- 1884Paal-Knorr Synthesis was initially reported independently by German chemists Carl Paal and Ludwig Knorr as a method for the preparation of furansGermanysource
- 1884Naval Discipline Act (British statute)Indiasource
- 1884Teacher's Highland Cream blended whisky registered.Scotlandsource
- 188526 February – A speed skating duel at Frognerkilen between Axel Paulsen and Renke van der Zee was attended by between 20,000 and 30,000 spectators.Norwaysource
- 188514 March Scotland 8–2 Ireland (in Glasgow)Irelandsource
- 1885August 19 – S Andromedae, the only supernova seen in the Andromeda Galaxy so far by astronomers, and the first ever noted outside the Milky Way, is discovered.source
- 188512 September – Arbroath 36–0 Bon Accord is the world's highest scoring unrigged professional Association football match. An official score of Dundee Harp 35–0 Aberdeen Rovers is recorded in a separate match on the same day.Scotlandsource
- 1885Martha, the last Passenger pigeon was bornsource
- 1885Evidence By Commission Act (British statute)Indiasource
- 1885New Zealand Cup winner: FusiladeNew Zealandsource
- 18866 February – German chemist Clemens Winkler discovers chemical element Germanium.Germanysource
- 188624 February - At Raukleiv’s first Siljordsskirendet, Johannes Nordgården falls at a 27 m world record, and Olaf Bergland later sets the official record at 25.5 m.Norwaysource
- 1886May 8 – American pharmacist Dr. John Pemberton invents a carbonated beverage that will be named 'Coca-Cola'.source
- 1886May 8 – Pharmacist Dr. John Stith Pemberton invents a carbonated beverage that will be named 'Coca-Cola'.United Statessource
- 1886November 11 – Heinrich Hertz verifies the existence of electromagnetic waves, at the University of Karlsruhe.source
- 1886December 14 – Yoho National Park establishedCanadasource
- 1886unknown date: The Brazilian arboreal mouse (Rhagomys rufescens) is described for the first time by zoologists.Brazilsource
- 1886A supplementary session of the Althing was first held in 1886.Icelandsource
- 1886New Zealand Cup – Spade GuineaNew Zealandsource
- 1886The publication of Crime and Punishment by Fyodor DostoyevskyRussiasource
- 18871 January – Clement Wragge is appointed Government Meteorologist for QueenslandAustraliasource
- 1887February 26 – At the Sydney Cricket Ground, George Lohmann becomes the first bowler to take eight wickets, in a Test innings.source
- 18871 October – A. G. Sheath, with Shot Put, 10.21 m at Napier, makes the first performance to be recognised as a national record.New Zealandsource
- 1887Results of the Michelson–Morley experiment are published, indicating that the speed of light is independent of motion.source
- 1887Heinrich Hertz discovers the photoelectric effect on the production and reception of electromagnetic (EM) waves (radio); this is an important step towards the understanding of the quantum nature of light.source
- 1887Franz König publishes "Über freie Körper in den Gelenken" in the medical journal Deutsche Zeitschrift für Chirurgie, describing (and naming) the disease Osteochondritis dissecans for the first time.source
- 1887The Petri dish is created by German bacteriologist Julius Richard Petri.Germanysource
- 1887Heinrich Hertz discovers the photoelectric effect on the production and reception of electromagnetic waves in radio, an important step towards the understanding of the quantum nature of light.Germanysource
- 1887Adolf Gaston Eugen Fick invents the contact lens, made of a type of brown glass.Germanysource
- 1887Appellate Jurisdiction Act (British statute)Indiasource
- 1887William Ewart Gladstone publishes Handbook of Home Rule.Irelandsource
- 1887Mixed doubles – ?. Hudson and K. HitchingsNew Zealandsource
- 1888January 3 – The great telescope (with an objective lens of 91 cm diameter) at Lick Observatory in California is first used.source
- 188824 March – Olof Jacobsen, gymnast and Olympic bronze medallistNorwaysource
- 188813 May – The young Beatrix Potter records a trip to Machynlleth in her diary.Walessource
- 18881 July – "The Dawn: A Journal for Australian Women" first published by Louisa Lawson, in Sydney.Australiasource
- 1888August 28 – The longest date in roman numerals is achieved, as "VIII-XXVIII-MDCCCLXXXVIII". In contrast, the shortest date (I-I-MM) will be achieved 111 years later on January 1, 2000.source
- 1888September 4 – Mohandas Gandhi embarks on the SS Clyde from Bombay for London.source
- 188813 December – Heinrich Hertz presents his report on the discovery of electromagnetic radiation to the Berlin Academy of SciencesGermanysource
- 1888John Robert Gregg first publishes Gregg shorthand in the United States.source
- 1888Maurice Barrès - Le Culte du moiFrancesource
- 1888W. B. Yeats joins the Esoteric Section of the Theosophical Society.Irelandsource
- 1888250 yards – A. Williams (Canterbury)New Zealandsource
- 1888440 yards – A. Williams (Canterbury)New Zealandsource
- 1889January 1 – The total solar eclipse of January 1, 1889 is seen over parts of California and Nevada.source
- 1889January 1 – A total solar eclipse is seen over parts of California and Nevada.United Statessource
- 188921 January – American "Professor" Baldwin makes the first balloon ascent in New Zealand at Dunedin.New Zealandsource
- 1889June 28 – The annular solar eclipse of June 28, 1889 is visible across the Atlantic Ocean, Africa and Indian Ocean, and is the 47th solar eclipse of Solar Saros 125.source
- 1889October 21 – Field Marshal Helmuth von Moltke the Elder is recorded by Adelbert Theodor Wangemann, a German associate of Thomas Edison, on wax cylinders via phonograph. The two surviving wax cylinders that are produced make von Moltke, who was born in 1800, the earliest-living human whose voice has been recorded, and the only person born in the 18th century whose voice will be heard into the 21st.source
- 1889November 14 – Pioneer American woman journalist Nellie Bly (Elizabeth Cochrane) begins an attempt to travel around the world in less than 80 days, inspired by Jules Verne; she finishes the journey in 72 days, 6 hours and 11 minutes.source
- 1889November 14 – Pioneer woman journalist Nellie Bly (Elizabeth Cochrane) begins an attempt to beat travel around the world in less than 80 days, inspired by Jules Verne; she finishes the journey in 72 days, 6 hours and 11 minutes.United Statessource
- 1889November – Bravo wins the Melbourne CupAustraliasource
- 1889Interpretation Act 1889 (British statute)Indiasource
- 1889Oscar Wilde published his dialogue, The Decay of Lying, and his story The Portrait of Mr. W. H..Irelandsource
- 1889250 yards – H. Reeves (Canterbury)New Zealandsource
- 1889The metric system was introduced in Norway (the actual law having been passed in 1875).Norwaysource
- 1890January 25 – American journalist Nellie Bly completes her round-the-world journey in 72 days.source
- 1890January 25 – Journalist Nellie Bly completes her round-the-world journey in 72 days.United Statessource
- 189020 March – The battle cruiser Almirante Tamandaré is launched at Rio de Janeiro Dockyards.Brazilsource
- 189020 March - Leo von Caprivi shift beginsGermanysource
- 189029 March Ireland 1–4 Scotland (in Belfast)Irelandsource
- 1890May 30 – The five-story skylight Arcade opens in Cleveland, Ohio.source
- 189015 October - "Birth" of Álvaro de Campos, one of Fernando Pessoa's heteronyms.Portugalsource
- 1890The folding carton box is invented by Robert Gair, a Brooklyn printer who developed production of paper-board boxes in 1879.source
- 1890Francis Galton announces a statistical demonstration of the uniqueness and classifiability of individual human fingerprints.source
- 1890440 yards – H. Reeves (Canterbury)New Zealandsource
- 1890Saint Petersburg Mathematical SocietyRussiasource
- 1890William McGonagall's Poetic Gems published.Scotlandsource
- 1891March 3 – The International Copyright Act of 1891 is passed, by the 51st United States Congress.source
- 1891March 3 – The International Copyright Act of 1891 is passed by the Fifty-first United States Congress.United Statessource
- 1891May 7 - Itata Incident: The Itata leaves San Diego for ChileChilesource
- 1891May 20 – Thomas Edison's prototype kinetoscope is first displayed at Edison's Laboratory, for a convention of the National Federation of Women's Clubs.source
- 1891June 1 – The Johnstown Inclined Plane opens in Johnstown, Pennsylvania.source
- 189112 August Godfrey Shaw sets the first (unofficial) world record by a New Zealander. He runs 57.2 seconds for 440 yards hurdles at the Isle of Man.New Zealandsource
- 1891September – Hugh Munro publishes the first table of mountains in Scotland over 3,000 feet (914.4 m), in the Scottish Mountaineering Club Journal; these become known as the Munros.Scotlandsource
- 1891December 22 – Asteroid 323 Brucia becomes the first asteroid discovered using photography.source
- 1891Nikola Tesla invents the Tesla coil.source
- 1891Gustave Moreau becomes a professor at the École des Beaux-Arts in Paris.Francesource
- 1891The modern taximeter is invented by German Friedrich Wilhelm Gustav Bruhn.Germanysource
- 1891The Fischer projection is devised by Hermann Emil Fischer.Germanysource
- 1891Standish James O'Grady publishes Finn and his Companions.Irelandsource
- 189211 February – Henriette Homann, photographer and painter (born 1819).Norwaysource
- 189219 March Ireland 2–3 Scotland (in Belfast)Irelandsource
- 1892April – First publication of The Irish NaturalistIrelandsource
- 1892September 9 – Amalthea, the fifth moon of Jupiter, is discovered by Edward Emerson Barnard.source
- 1892Viruses are first described by Russian biologist Dmitri Ivanovsky.source
- 1892Danish botanist Eugenius Warming gives the first detailed description of the Brazilian cerrado in his book Lagoa Santa.Brazilsource
- 18924–9 July – The 14th Scandinavian Scientist Conference is held in Copenhagen.Denmarksource
- 1892Winners: Linfield 7–0 The Black WatchIrelandsource
- 1892The discovery of viruses by Dmitri IvanovskyRussiasource
- 1893February 28 – USS Indiana, the first battleship in the United States Navy comparable to other nation's battleships of the time, is launched.source
- 1893May 9 – Edison's 1½ inch system of Kinetoscope is first demonstrated in public, at the Brooklyn Institute.source
- 1893May 10 – Nix v. Hedden: the United States Supreme Court legally declares the tomato to be a vegetable.United Statessource
- 1893July 1 – U.S. President Grover Cleveland is operated on in secret.source
- 1893July 11 – Kōkichi Mikimoto, in Japan, develops the method to seed and grow cultured pearls.source
- 189318 November – Akademischer SC 1893 BerlinGermanysource
- 1893Carl Anton Larsen becomes the first man to ski in Antarctica.source
- 1893German physicist Wilhelm Wien formulates Wien's displacement law.source
- 1893Tarcoola wins the Melbourne CupAustraliasource
- 1893Émile Zola - Le Docteur PascalFrancesource
- 1893Wilhelm Wien formulates Wien's displacement law.Germanysource
- 1893Douglas Hyde publishes Love Songs of Connacht.Irelandsource
- 1893440 yards hurdles – D. Matson (Canterbury)New Zealandsource
- 1893The first publication of The Story of an Unknown Man by Anton Chekhov.Russiasource
- 1894March 21 – A syzygy of planets occurs, as Mercury transits the Sun as seen from Venus, and Mercury and Venus both transit the Sun as seen from Saturn, but no two of the transits are simultaneous.source
- 18941 October – Leipziger Volkszeitung is first published.Germanysource
- 1894Oil is discovered on the Osage Indian reservation, making the Osage the "richest group of people in the world".source
- 1894Camille Flammarion - Omega: The Last Days of the WorldFrancesource
- 1894Professor John Joly of Trinity College Dublin, devises a colour photographic process.Irelandsource
- 1894Fours – J. Davidson, A. Owen, J. Wedderspoon and J. Evans (skip) (Caledonian)New Zealandsource
- 1894Ian Maclaren's stories Beside the Bonnie Brier Bush are published.Scotlandsource
- 1894Date unknown - Kata Dalström is engaged as a lecturer for the Socialists.Swedensource
- 1894Argon discovered by Lord Rayleigh and Sir William Ramsay.United Kingdomsource
- 1894Owen Morgan Edwards makes his first report on county schools in WalesWalessource
- 189515 March – Dreyfus is landed on Devil's Island off French Guiana.Francesource
- 18954 July - The Chilean cruiser Esmeralda (1895) is laid down.Chilesource
- 1895November 1 – Max Skladanowsky and his brother Emil present a short film at the Berlin Wintergarten theatre in Germany using the movie projector they have developed.source
- 1895November 8 – Wilhelm Röntgen discovers the type of electromagnetic radiation later known as X-rays.source
- 1895December 11 – Svante Arrhenius becomes the first scientist to deliver quantified data about the sensitivity of global climate to atmospheric carbon dioxide (the "Greenhouse effect"), as he presents his paper "On the Influence of Carbonic Acid in the Air Upon The Temperature of the Ground" to the Royal Swedish Academy of Sciences.source
- 1895The Umfolozi Game Reserve is proclaimed.South Africasource
- 1895Konstantin Tsiolkovsky proposes a space elevator.source
- 1895Little Donah Polka published under the name 'Ansell Hope' (unidentified)Australiasource
- 1895New Zealand Derby – EuroclydonNew Zealandsource
- 1895Shot put – Charles M. Louisson (Canterbury)New Zealandsource
- 1895W. E. B. Du Bois becomes the first African American to receive a Ph.D. from Harvard University.United Statessource
- 1895Daniel Owen – Straeon y PentanWalessource
- 1896January 5 – An Austrian newspaper reports Wilhelm Röntgen's discovery, last November, of a type of electromagnetic radiation, later known as X-rays.source
- 1896January 12 – H. L. Smith takes the first X-ray photograph.source
- 189614 January – Acres demonstrates his Kineopticon to the Royal Photographic Society at the Queen's Hall in London.United Kingdomsource
- 1896April – Svante Arrhenius first publishes the "greenhouse law", becoming the first person to predict that emissions of carbon dioxide from the burning of fossil fuels and other combustion processes are large enough to cause global warming through the greenhouse effect.source
- 189624 September – William Frost flies his Frost Airship Glider for the only time.Walessource
- 1896German physicist Wilhelm Wien derives the Wien approximation.Germanysource
- 1896Unknown date – Kotaro Mikamo reports the first results of a double-eyelid procedure for aesthetic purposes.Japansource
- 1896250 yards – W. Kingston (Otago)New Zealandsource
- 1896100 yards – E. Robinson (Canterbury)New Zealandsource
- 1896A new Royal Observatory, Edinburgh, is established on Blackford Hill, replacing that on Calton Hill, under the auspices of Ralph Copeland, Astronomer Royal for Scotland.Scotlandsource
- 1896Owen Morgan Edwards – Cartrefi CymruWalessource
- 189727 March Scotland 5–1 Ireland (in Glasgow)Irelandsource
- 1897April 30 – J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.source
- 189730 April – J. J. Thomson first announces his discovery of the electron.United Kingdomsource
- 1897May 6 – John Jacob Abel announces the successful isolation of epinephrine (adrenaline), in a paper read before the Association of American Physicians.source
- 1897July 25 – Writer Jack London sails to join the Klondike Gold Rush, where he will write his first successful stories.source
- 1897October 13 – HMS Canopus, a pre-dreadnought battleship of the Royal Navy, is launched at Portsmouth, England; she will be deployed widely in World War I.source
- 189713 October – HMS Canopus, a pre-dreadnought battleship of the Royal Navy, is launched at Portsmouth; she will be deployed widely in World War I.United Kingdomsource
- 1897Jules Verne - Le Sphinx des glacesFrancesource
- 1897David Hilbert unifies the field of algebraic number theory with his treatise Zahlbericht.Germanysource
- 1897Pairs – W. Cowie and W. Thomson (skip) (Dunedin)New Zealandsource
- 1897Arthur Cheetham begins making films in Wales.Walessource
- 1897Walford Davies – Overture in D minorWalessource
- 1898March 15 – March 1898 Japanese general electionJapansource
- 189826 March Ireland 0–3 Scotland (in Belfast)Irelandsource
- 1898May 28 – Secondo Pia takes the first photographs of the Shroud of Turin and discovers that the image on the Shroud itself appears to be a photographic negative.source
- 189828 May – Italian photographer Secondo Pia takes the first photograph of the Shroud of Turin, unwittingly taking the first step in the field of modern sindonology.Italysource
- 1898May 29 Lease of Guangzhouwan to FranceChinasource
- 189830 May – William Ramsay and Morris Travers make the first of their discovery of noble gases, krypton, followed on 7 June by neon and on 12 July by xenon at University College London.United Kingdomsource
- 18981 June – HNoMS Storm is launched, one of the oldest ships still in front line service in the Second World WarNorwaysource
- 1898June 7 – William Ramsay and Morris Travers discover neon at their laboratory at University College London, after extracting it from liquid nitrogen.source
- 1898July 18 – "The Adventures of Louis de Rougemont" first appear in The Wide World Magazine, as its August 1898 issue goes on sale.source
- 1898December 26 – Marie and Pierre Curie announce the discovery of an element that they name radium.source
- 189826 December – Marie and Pierre Curie announce discovery of a substance they call radium.Francesource
- 1898880 yards – H. C. Garsia (Canterbury)New Zealandsource
- 1899January 14 – The White Star Line's transatlantic ocean liner RMS Oceanic is launched from the Belfast shipyards in Ireland. At 17,272 gross register tons and 704 ft, she is the largest ship afloat at this time.source
- 1899January 19 – Future film producer Samuel Goldwyn, born in Poland and later a resident of Germany and England, arrives in the United States at the age of sixteen as Szmuel Gelbfisz.United Statessource
- 1899March 18 – Phoebe, the ninth-known moon of the planet Saturn is discovered by U.S. astronomer William Pickering from analysis of photographic plates made by a Peruvian observatory, the first discovery of a satellite photographically.source
- 18992 April – The Hamburg America Line cruise ship SS Graf Waldersee begins its maiden voyage.Germanysource
- 1899April 21 – The nova V606 Aquilae is first observed from Earth as seen within the constellation Aquila.source
- 1899June 17 – David Hilbert creates the modern concept of geometry, with the publication of his book Grundlagen der Geometrie, released at Göttingen.source
- 1899June 27 – A. E. J. Collins, a 13-year-old schoolboy, makes the highest-ever recorded individual score in cricket, 628 not out. His record will stand for 117 years.source
- 189927 June – The paperclip is patented by Johan Vaaler, a Norwegian inventor.Norwaysource
- 18998 October – The word "wowser" is first used by John Norton, editor of the Melbourne Truth newspaper.Australiasource
- 1899October 19 – Robert H. Goddard receives his inspiration to develop the first rocket capable of reaching outer space, after viewing his yard from high in a tree and imagining "how wonderful it would be to make some device which had even the possibility of ascending to Mars, and how it would look on a small scale, if sent up from the meadow at my feet."source
- 1899November – Momijigari, the oldest extant Japanese film, is shot an open space behind the Kabuki-za in Tokyo.Japansource
- 1899December 2 – During the new moon, a near-grand conjunction of the classical planets and several binocular Solar System bodies occur. The Sun, Moon, Mercury, Mars and Saturn are all within 15° of each other, with Venus 5° ahead of this conjunction and Jupiter 15° behind.source
- 1899Chinese oracle bones from the former capital site of Yinxu are identified by academic Wang Yirong as carrying Shang dynasty writing.Chinasource
- 1899250 yards – W. Kingston (Otago)New Zealandsource
- 1899The Bus is introduced in StockholmSwedensource