Template:On This Day (nonfiction)/March 9: Difference between revisions

Latest revision as of 05:54, 9 March 2022

1815: Electrical engineer and inventor Francis Ronalds describes the first battery-operated clock in the Philosophical Magazine.
1851: Physicist and chemist Hans Christian Ørsted dies. Ørsted discovered that electric currents create magnetic fields, which was the first connection found between electricity and magnetism.
1923: Theoretical physicist, theoretical chemist, and Nobel laureate Walter Kohn born. Kohn will develop density functional theory, which will make it possible to calculate quantum mechanical electronic structure by equations involving the electronic density.
1928: Engineer Gerald Bull born. Bull will attempt to build artillery guns capable of launching satellites into orbit.
1943: Computer scientist Jef Raskin born. Raskin will conceive and start the Macintosh project for Apple in the late 1970s.
1981: Biophysicist Max Delbrück dies. Delbrück helped launch the molecular biology research program in the late 1930s; his ideas stimulated physical scientists' interest into biology, especially as to basic research to physically explain genes, mysterious at the time.

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 ||1765: After a campaign by the writer Voltaire, judges in Paris posthumously exonerate Jean Calas of murdering his son. Calas had been tortured and executed in 1762 on the charge, though his son may have actually committed suicide. No DOB. Pic.
-|File:Giuseppe Piazzi.jpg|link=Giuseppe Piazzi (nonfiction)|1766: Priest, mathematician, and astronomer [[Giuseppe Piazzi (nonfiction)|Giuseppe Piazzi]] uses [[Gnomon algorithm]] techniques to detect and counteract [[crimes against mathematical constants]].
 File:Sir Francis Ronalds.jpg|link=Francis Ronalds (nonfiction)|1815: Electrical engineer and inventor [[Francis Ronalds (nonfiction)|Francis Ronalds]] describes the first battery-operated clock in the ''Philosophical Magazine''.