Portal:History of science/Selected anniversaries/April 15

April 15:

• 1415 - Death of Manuel Chrysoloras, Greek humanist and grammarian

• 1452 - Birth of Leonardo da Vinci, Italian Renaissance polymath (d. 1519)

• 1552 - Birth of Pietro Cataldi, Italian mathematician (d. 1626)

• 1704 - Death of Johann van Waveren Hudde, Dutch mathematician (b. 1628)

• 1707 - Birth of Leonhard Euler, Swiss mathematician (d. 1783)

• 1741 - Birth of Charles Willson Peale, American painter, soldier and naturalist (d. 1827)

• 1755 - Samuel Johnson's A Dictionary of the English Language published in London

• 1764 - Death of Peder Horrebow, Danish astronomer (b. 1679)

• 1765 - Death of Mikhail Lomonosov, Russian scientist and writer (b. 1711)

• 1772 - Birth of Étienne Geoffroy Saint-Hilaire, French naturalist (d. 1844)

• 1793 - Birth of Friedrich Georg Wilhelm von Struve, German astronomer (d. 1864)

• 1793 - Death of Ignacije Szentmartony, Croatian Jesuit missionary and geographer (b. 1718)

• 1809 - Birth of Hermann Grassmann, German mathematician (d. 1877)

• 1854 - Death of Arthur Aikin, English chemist, mineralogist, and writer (b. 1773)

• 1874 - Birth of Johannes Stark, German physicist, Nobel laureate (d. 1957)

• 1896 - Birth of Nikolay Nikolayevich Semyonov, Russian chemist, Nobel laureate (d. 1986)

• 1923 - Insulin becomes generally available for use by diabetics

• 1927 - Birth of Robert Mills, American physicist (d. 1999)

• 1993 - Death of John Tuzo Wilson, Canadian geologist (b. 1908)