1796 - Carl Friedrich Gauss discovered that every positive integer is representable as a sum of at most three triangular numbers.
1925 - Scopes Trial: In Dayton, Tennessee, the so-called "Monkey Trial" begins with John T. Scopes, a young high school science teacher, accused of teaching…
1923 - Insulin first became generally available for use by diabetics.
1452 - Leonardo da Vinci, Italian Renaissance polymath (above)
1552 - Pietro Cataldi, Italian mathematician
1641 - Robert Sibbald, Scottish physician
1707 - Leonhard Euler, Swiss mathematician
1710 - William…
1963 - Vostok 6 Mission, Cosmonaut Valentina Tereshkova becomes the first woman in space.
1591 - Joseph Solomon Delmedigo, Italian physician, mathematician, and music theorist
1633 - Jean de ThÃ©venot, French traveler and scientist
1801 - Julius PlÃ¼cker, German mathematician and…
1969 - The first Internet connection was created when network control protocol packets were sent from the data port of one IMP to another
1436 - Regiomontanus, German mathematician
1519 - Andrea Cesalpino, Italian philosopher, physician, and botanist
1580 - Godefroy Wendelin, Flemish…