Day in History Archive April 25

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Note: These historical tidbits have been collected from various sources, mostly on the Internet. As detailed in this article, there is a lot of wrong information that is repeated hundreds of times because most websites do not validate with authoritative sources. On RF Cafe, events with hyperlinks have been verified. All will eventually be either verified or removed.
Please submit significant historical events and dates for inclusion in these lists. I will be glad to include your name and birthday. Please do not submit your death date ;-)
 

April 25

Happy Birthday to Guglielmo Marconi! Please click here to visit RF Cafe.

1744: Swedish astronomer Anders Celsius, after whom the temperature scale is named, died. 1792: The guillotine was first used in France to execute highwayman Nicolas J. Pelletier. 1840: Siméon-Denis Poisson, mathematician and experimenter in electromagnetic theory, died. 1849: Felix Klein, mathematician and creator of the single-surfaced Klein bottle, was born. 1859: Ground was broken for the Suez Canal. 1874: Radio pioneer Guglielmo Marconi was born in Bologna, Italy. 1900: Austrian-Swiss Nobel physicist Wolfgang Pauli, of Exclusion Principal fame, was born. 1901: New York became the first state to require automobile license plates - the fee was $1. 1928: Floyd Bennett, who piloted the airplane that flew Admiral Byrd, died. 1953: Dr. James D. Watson and Dr. Francis H.C. Crick suggested the double helix structure of DNA. 1961: Robert Noyce was granted a patent for the integrated circuit. 1990: The Hubble Space Telescope was deployed.