Template:Selected anniversaries/April 30: Difference between revisions
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||1905: Sergey Mikhailovich Nikolsky born ... mathematician. Nikolsky made fundamental contributions to functional analysis, approximation of functions, quadrature formulas, enclosed functional spaces and their applications to variational solutions of partial differential equations. Pic. | ||1905: Sergey Mikhailovich Nikolsky born ... mathematician. Nikolsky made fundamental contributions to functional analysis, approximation of functions, quadrature formulas, enclosed functional spaces and their applications to variational solutions of partial differential equations. Pic. | ||
File:Tesla with ray gun.jpg|link=Nikola Tesla|1913: [[Nikola Tesla]], [[Albert Einstein]], and [[J. J. Thomson (nonfiction)|J. J. Thomson]] team up to defeat the combined forces of criminal mathematical functions [[Forbidden Ratio]] and [[Gnotilus]]. | |File:Tesla with ray gun.jpg|link=Nikola Tesla|1913: [[Nikola Tesla]], [[Albert Einstein]], and [[J. J. Thomson (nonfiction)|J. J. Thomson]] team up to defeat the combined forces of criminal mathematical functions [[Forbidden Ratio]] and [[Gnotilus]]. | ||
File:Genevieve_Grotjan_Feinstein.jpg|link=Genevieve Grotjan Feinstein (nonfiction)|1913: Mathematician and cryptanalyst [[Genevieve Grotjan Feinstein (nonfiction)|Genevieve Grotjan Feinstein]] born. Feinstein will work for the Signals Intelligence Service throughout World War II, playing an important role in deciphering the Japanese cryptography machine Purple, and will later work on the Cold War-era Venona project. | File:Genevieve_Grotjan_Feinstein.jpg|link=Genevieve Grotjan Feinstein (nonfiction)|1913: Mathematician and cryptanalyst [[Genevieve Grotjan Feinstein (nonfiction)|Genevieve Grotjan Feinstein]] born. Feinstein will work for the Signals Intelligence Service throughout World War II, playing an important role in deciphering the Japanese cryptography machine Purple, and will later work on the Cold War-era Venona project. | ||
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File:Claude Shannon.jpg|link=Claude Shannon (nonfiction)|1916: Mathematician, engineer, and information scientist [[Claude Shannon (nonfiction)|Claude Shannon]] born. He will be known as "the father of information theory". | File:Claude Shannon.jpg|link=Claude Shannon (nonfiction)|1916: Mathematician, engineer, and information scientist [[Claude Shannon (nonfiction)|Claude Shannon]] born. He will be known as "the father of information theory". | ||
File:Einstein drumming.jpg|link=Albert Einstein|1916: Jazz drummer and theoretical crime-fighter [[Albert Einstein]] stops the [[Forbidden Ratio]] from kidnapping newborn infant [[Claude Shannon (nonfiction)|Claude Shannon]]. | |File:Einstein drumming.jpg|link=Albert Einstein|1916: Jazz drummer and theoretical crime-fighter [[Albert Einstein]] stops the [[Forbidden Ratio]] from kidnapping newborn infant [[Claude Shannon (nonfiction)|Claude Shannon]]. | ||
||1920: Gerda Lerner born ... historian and author. Pic. | ||1920: Gerda Lerner born ... historian and author. Pic. | ||
Revision as of 14:32, 30 April 2020
1777: Mathematician, astronomer, and physicist Carl Friedrich Gauss born. He will have an exceptional influence in many fields of mathematics and science and be ranked as one of history's most influential mathematicians.
1897: J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
1913: Mathematician and cryptanalyst Genevieve Grotjan Feinstein born. Feinstein will work for the Signals Intelligence Service throughout World War II, playing an important role in deciphering the Japanese cryptography machine Purple, and will later work on the Cold War-era Venona project.
1916: Mathematician, engineer, and information scientist Claude Shannon born. He will be known as "the father of information theory".
1964: Electronics researcher and Gnomon algorithm theorist Ralph Hartley uses the Hartley oscillator to detect and erase the Forbidden Ratio.
1973: Watergate: U.S. President Richard Nixon announces that White House Counsel John Dean has been fired and that other top aides, most notably H. R. Haldeman and John Ehrlichman, have resigned.
2016: Reaching voted Picture of the Day by the citizens of New Minneapolis, Canada.