Science & Discovery in the 14th century

14 sourced entries, 1307 CE to 1396 CE, oldest first. Also see Science & Discovery across every century or everything else in the 14th century.

• 1307April 14 – Persian historian Rashid al-Din Hamadani completes his comprehensive chronicle of Persian history, the Jami' al-tawarikh, inscribing the Persian calendar date "24th day of Farvardin 686"source
• 1313Wang Zhen, Chinese agronomist, government official and inventor of wooden-based movable type printing, publishes the Nong Shu ("Book of Agriculture").source
• 1327Richard of Wallingford, English cleric and abbot, describes the construction of an astronomical clock in his Tractatus Horologii Astronomici.source
• 1337Petrarch, "father" of Renaissance humanism, first visits Rome to wander its mysterious ruins, with an eye for aesthetics as well as for history, exciting a renewed interest in Classical civilisation.source
• 1345March 4 – Guy de Chauliac observes the planets Saturn, Jupiter, and Mars conjoined in the sky, under the sign of Aquarius, and a solar eclipse on the same day. This sign is interpreted as foreboding by many, and Chauliac will later blame it for the Black Plague.source
• 1352Moroccan traveller Ibn Battuta reports the existence of the ngoni and balafon musical instruments, at the court of Mansa Musa.source
• 1352Earliest surviving illustration of someone wearing spectacles, a fresco in the chapter house of the Dominican convent of San Nicolò, Treviso by Tommaso da Modena (anachronistically) depicting Hugh of Saint-Cher.source
• 1357The first public exhibition of the Shroud of Turin is recorded.source
• 1362Purported date of the inscription of the Kensington Runestone, at Solem, Minnesota.source
• 1366October 26 – Comet 55P/Tempel–Tuttle passes 0.0229 AU km mi from Earth.source
• 1372The city of Aachen, Germany, begins adding a Roman numeral Anno Domini date to a few of its coins, the first city in the world to do so.source
• 1378November 10 – The first observation of Halley's Comet from Earth is made, based on an estimate from orbital calculations.source
• 1394December 6 – The astronomical clock of St. Nicholas Church in Stralsund is finished and signed by Nikolaus Lilienfeld.source
• 1396November 24 – The Transit of Venus, the last not to be part of a pair, is possibly observed by Aztec astronomers.source