Template:Selected anniversaries/April 21: Difference between revisions
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File:Mark Twain by Abdullah Frères, 1867.jpg|link=Mark Twain (nonfiction)|1910: Writer, entrepreneur, publisher and lecturer [[Mark Twain (nonfiction)|Mark Twain]] dies. | File:Mark Twain by Abdullah Frères, 1867.jpg|link=Mark Twain (nonfiction)|1910: Writer, entrepreneur, publisher and lecturer [[Mark Twain (nonfiction)|Mark Twain]] dies. | ||
File:Richard Courant.jpg|link=Richard Courant (nonfiction)|1910: Mathematician [[Richard Courant (nonfiction)|Richard Courant]] | File:Richard Courant.jpg|link=Richard Courant (nonfiction)|1910: Mathematician [[Richard Courant (nonfiction)|Richard Courant]] demonostrates that the existence of a physical solution does not obviate proof of [[crimes against mathematical constants]]. | ||
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Revision as of 08:05, 2 April 2017
1718: Painter, mathematician, astronomer, and architect Philippe de La Hire dies.
1774: Physicist, astronomer, and mathematician Jean-Baptiste Biot born. He will establish the reality of meteorites, make an early balloon flight, and study the polarization of light.
1793: American captain and mathematician Nathaniel Bowditch publishes new class of Gnomon algorithm functions which improved maritime navigation techniques.
1910: Writer, entrepreneur, publisher and lecturer Mark Twain dies.
1910: Mathematician Richard Courant demonostrates that the existence of a physical solution does not obviate proof of crimes against mathematical constants.