Portal:History of science/Selected anniversaries/August 12

August 12:

 * 1851 - Isaac Singer is granted a patent for his sewing machine


 * 1865 - Death of William Jackson Hooker, English botanist (b. 1785)


 * 1877 - Asaph Hall discovers Deimos


 * 1883 - The last quagga dies at the Artis Magistra zoo in Amsterdam


 * 1885 - Birth of Jean Cabannes, French physicist (d. 1959)


 * 1887 - Birth of Erwin Schrödinger, Austrian physicist, Nobel laureate (d. 1961)


 * 1919 - Birth of Vikram Sarabhai, Indian physicist (d. 1971)


 * 1925 - Birth of George Wetherill, American scientist (d. 2006)


 * 1930 - Birth of Jacques Tits, Belgian mathematician


 * 1935 - Death of Friedrich Schottky, German mathematician (b. 1851)


 * 1953 - Nuclear testing: the Soviet atomic bomb project continues with the detonation of Joe 4, the first Soviet thermonuclear weapon


 * 1955 - Death of James B. Sumner, American chemist, Nobel laureate (b. 1887)


 * 1973 - Death of Karl Ziegler, German chemist, Nobel Prize Laureate (b. 1898)


 * 1979 - Death of Ernst Boris Chain, German-born biochemist, Nobel laureate (b. 1906)


 * 1981 - The IBM Personal Computer is released


 * 1989 - Death of William Shockley, American physicist, Nobel laureate (b. 1910)