Template:Selected anniversaries/April 20: Difference between revisions
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||1918 – Karl Ferdinand Braun, German-American physicist and academic, Nobel Prize laureate (b. 1850) | ||1918 – Karl Ferdinand Braun, German-American physicist and academic, Nobel Prize laureate (b. 1850) | ||
||Eric Magnus Campbell Tigerstedt (d. April 20, 1925) was one of the most significant inventors in Finland at the beginning of the 20th century and has been called the "Thomas Edison of Finland". He was a pioneer of sound-on-film technology and made significant improvements to the amplification capacity of the vacuum valve. Pic. | |||
||1927 – K. Alex Müller, Swiss physicist and academic, Nobel Prize laureate | ||1927 – K. Alex Müller, Swiss physicist and academic, Nobel Prize laureate | ||
Revision as of 07:43, 18 February 2018
1653: Oliver Cromwell dissolves the Rump Parliament.
1654: Mathematician Niels Steensen publishes new class of Gnomon algorithm functions which detect and prevent crimes against mathematical constants.
1808: Mathematician and crime-fighter Johann Friedrich Pfaff publishes new theory of differential forms which quickly finds application in the detection and prevention of crimes against mathematical constants.
1932: Mathematician Giuseppe Peano dies. He did pioneering work in mathematical logic and set theory.
1932: New class of crimes against mathematical constants exploits death of mathematician Giuseppe Peano.
1961: Failure of the Bay of Pigs Invasion of US-backed Cuban exiles against Cuba.