Template:Selected anniversaries/April 30

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  • 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.

    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.

    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: Nikola Tesla, Albert Einstein, and J. J. Thomson team up to defeat the combined forces of criminal mathematical functions Forbidden Ratio and Gnotilus.

    1913: Nikola Tesla, Albert Einstein, and J. J. Thomson team up to defeat the combined forces of criminal mathematical functions Forbidden Ratio and Gnotilus.

  • 1913: Mathematician and cryptanalystGenevieve 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 worke on the Cold War-era Venona project.

    1913: Mathematician and cryptanalystGenevieve 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 worke 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".

    1916: Mathematician, engineer, and information scientist Claude Shannon born. He will be known as "the father of information theory".

  • 1916: Jazz drummer and theoretical crime-fighter Albert Einstein stops the Forbidden Ratio from kidnapping newborn infant Claude Shannon.

    1916: Jazz drummer and theoretical crime-fighter Albert Einstein stops the Forbidden Ratio from kidnapping newborn infant Claude Shannon.

  • 1964: Electronics researcher and Gnomon algorithm theorist Ralph Hartley uses the Hartley oscillator to detect and erase the Forbidden Ratio.

    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.

    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.

    2016: Reaching voted Picture of the Day by the citizens of New Minneapolis, Canada.

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