Template:Selected anniversaries/September 17: Difference between revisions
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||1859 – Joshua A. Norton declares himself "Norton I, Emperor of the United States." | ||1859 – Joshua A. Norton declares himself "Norton I, Emperor of the United States." | ||
||1877 – Henry Fox Talbot, English photographer, developed the Calotype Process (b. 1800) | ||1877 – Henry Fox Talbot, English photographer, developed the Calotype Process (b. 1800) | ||
||1878 – Orélie-Antoine de Tounens, French lawyer and adventurer (b. 1825) | ||1878 – Orélie-Antoine de Tounens, French lawyer and adventurer (b. 1825) | ||
||Hans Freudenthal (b. 17 September 1905) was a German-born Dutch mathematician. He made substantial contributions to algebraic topology and also took an interest in literature, philosophy, history and mathematics education. | |||
||1908 – The Wright Flyer flown by Orville Wright, with Lieutenant Thomas Selfridge as passenger, crashes, killing Selfridge, who becomes the first airplane fatality. | ||1908 – The Wright Flyer flown by Orville Wright, with Lieutenant Thomas Selfridge as passenger, crashes, killing Selfridge, who becomes the first airplane fatality. | ||
Revision as of 14:56, 1 September 2017
1826: Mathematician and academic Bernhard Riemann born. He will make contributions to analysis, number theory, and differential geometry.
1855: 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.
1857: Scientist and engineer Konstantin Tsiolkovsky born. He will be one of the founding fathers of modern rocketry and astronautics.
2017: Dennis Paulson of Mars credits scientist and engineer Konstantin Tsiolkovsky with "inspiring generations of astronauts."