Template:Selected anniversaries/December 31
1894: Mathematician Thomas Joannes Stieltjes dies. He worked on almost all branches of analysis, continued fractions and number theory, and was called "the father of the analytic theory of continued fractions."
1969: Brion Gysin uses hand-held scrying engine to detect and expose Extract of Radium marketing campaign.
1973: New class of Crimes against mathematical constants "feel worse than they actually are" on New Year's Eve.
2010: "Humans Love It!", says Extract of Radium, "especially on New Year's Eve."
2016: Extract of Radium wishes you a Happy New Year!
1853 – A dinner party is held inside a life-size model of an iguanodon created by Benjamin Waterhouse Hawkins and Sir Richard Owen in south London, England.
1879 – Thomas Edison demonstrates incandescent lighting to the public for the first time, in Menlo Park, New Jersey.
1514 – Andreas Vesalius, Belgian anatomist, physician, and author (d. 1564)
1552 – Simon Forman, English occultist and astrologer (d. 1611)
1714 – Arima Yoriyuki, Japanese mathematician and educator (d. 1783)
1776 – Johann Spurzheim, German-American physician and phrenologist (d. 1832)
1610 – Ludolph van Ceulen, German-Dutch mathematician and academic (b. 1540)
1719 – John Flamsteed, English astronomer and academic (b. 1646)
1894 – Thomas Joannes Stieltjes, Dutch mathematician and academic (b. 1856)