Template:Selected anniversaries/July 20: Difference between revisions
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|File:Didacus automaton profile.jpg|link=Didacus automaton (nonfiction)|1562: [[Didacus automaton (nonfiction)|Didacus automaton]] develops self-awareness, invents new class of [[Gnomon algorithm functions]]. | |File:Didacus automaton profile.jpg|link=Didacus automaton (nonfiction)|1562: [[Didacus automaton (nonfiction)|Didacus automaton]] develops self-awareness, invents new class of [[Gnomon algorithm functions]]. | ||
||Henri-Louis Duhamel du Monceau (b. 20 July 1700 | ||Frans van Ravelingen Latinized Franciscus Raphelengius (d. July 20, 1597), was a Flemish-born scholar, printer and bookseller, working at Antwerp and later at Leiden. For the last decade of his life he was professor of Hebrew at Leiden University. He produced an Arabic-Latin dictionary, about 550 pages, published posthumously in 1613 at Leiden. This was the first publication by printing press of a book-length dictionary for the Arabic language in Latin. Pic. | ||
||Henri-Louis Duhamel du Monceau (b. 20 July 1700), was a French physician, naval engineer and botanist. | |||
||1804 – Richard Owen, English biologist, anatomist, and paleontologist (d. 1892) | ||1804 – Richard Owen, English biologist, anatomist, and paleontologist (d. 1892) | ||
Revision as of 20:56, 1 April 2018
1866: Mathematician and academic Bernhard Riemann dies. He made contributions to analysis, number theory, and differential geometry.
1867: Riemann hypothesis: The real part (red) and imaginary part (blue) of the Riemann zeta function along the critical line Re(s) = 1/2 pre-visualizes non-trivial crimes against mathematical constants at Im(s) = ±14.135, ±21.022 and ±25.011.
1932: In Washington, D.C., police fire tear gas on World War I veterans, part of the Bonus Expeditionary Force, who attempt to march to the White House.
1937: Businessman and inventor Guglielmo Marconi dies. He shared the 1909 Nobel Prize in Physics with Karl Ferdinand Braun "in recognition of their contributions to the development of wireless telegraphy".
1938: Mathematician and crime-fighter Ferdinand von Lindemann uses the transcendental property of π (pi) to detect and prevent crimes against mathematical constants.
1977: Project MKUltra (nonfiction): The Central Intelligence Agency releases documents under the Freedom of Information Act revealing it had engaged in mind-control experiments.
2017: Pin Man says he "was involved with Project MKUltra (nonfiction)."