Ptolemy

2nd-century Roman mathematician, astronomer, geographer

7 dated entries naming Ptolemy, drawn from 6 separate years between 100 CE and 170 CE. Nothing here is written by us: each line is the sentence a Wikipedia year article used, and the link beside it opens the exact revision.

JSON Wikipedia article Wikidata Q34943

1st century

100Ptolemy, Greek astrologer, astronomer, geographer and mathematician (d. 170)source

2nd century

130Claudius Ptolemaeus tabulates angles of refraction for several media.source
140Ptolemy completes his Almagest (approximate date).source
150The earliest atlas (Ptolemy's Geography) is made (approximate date).source
150This is also the approximate date of completion of Ptolemy's monumental work Almagest. The geocentric cosmology contained in it holds sway for 1,400 years.source
165Claudius Ptolemaeus, Greek astronomer (approximate date)source
170Ptolemy, Greek mathematician and astronomer (b. AD 100)source