Portal:History of science/Selected anniversaries/July 23

July 23:

 * 1773 - Death of George Edwards, English naturalist (b. 1693)


 * 1775 - Birth of Étienne-Louis Malus, French physicist and mathematician (d. 1812)


 * 1886 - Birth of Walter H. Schottky, German physicist (d. 1976)


 * 1906 - Birth of Vladimir Prelog, Croatian chemist, Nobel Prize laureate (d. 1998)


 * 1916 - Death of Sir William Ramsay, Scottish chemist, Nobel Prize laureate (b. 1852)


 * 1962 - Telstar relays the first live trans-Atlantic television signal


 * 1968 - Death of Henry Hallett Dale, English scientist, Nobel Prize laureate (b. 1875)