Portal:History of science/Selected anniversaries/January 7

January 7:

 * 1610 - Galileo Galilei observes the four largest moons of Jupiter for the first time. He named them and in turn the four are called the Galilean moons


 * 1834 - Birth of Johann Philipp Reis, German physicist and inventor (d. 1874)
 * 1871 - Birth of Émile Borel, French mathematician and politician (d. 1956)
 * 1878 - Death of François-Vincent Raspail, French chemist (b. 1794)
 * 1893 - Death of Jožef Stefan, Slovenian physicist and mathematician (b. 1835)
 * 1894 - W. K. Dickson receives a patent for motion picture film
 * 1925 - Birth of Gerald Durrell, British naturalist (d. 1995)
 * 1927 - First transatlantic telephone call – New York City to London
 * 1941 - Birth of John E. Walker, English chemist, Nobel Prize laureate
 * 1954 - Georgetown–IBM experiment, the first public demonstration of a machine translation system, is held in New York at the head office of IBM
 * 1998 - Death of Vladimir Prelog, Croatian chemist, Nobel Prize laureate (b. 1906)