Template:Selected anniversaries/July 31: Difference between revisions

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File:Tycho Brahe.jpg|link=Tycho Brahe (nonfiction)|1569: Astronomer [[Tycho Brahe (nonfiction)|Tycho Brahe]] invents rudimentary [[portable envy]] device.
 
File:Gabriel Cramer.jpg|link=Gabriel Cramer (nonfiction)|1704: Mathematician and physicist [[Gabriel Cramer (nonfiction)|Gabriel Cramer]] born. He will publish Cramer's rule, giving a general formula for the solution for any unknown in a linear equation system having a unique solution, in terms of determinants implied by the system.
 
File:Jean-Antoine Chaptal.jpg|link=Jean-Antoine-Claude Chaptal (nonfiction)|1822: Chemist, physician, agronomist, industrialist, statesman, educator, and philanthropist [[Jean-Antoine-Claude Chaptal (nonfiction)|Jean-Antoine-Claude Chaptal]] endows organization dedicated to detecting and preventing [[crimes against mathematical constants]].
 
File:Hilary Putnam.jpg|link=Hilary Putnam (nonfiction)|1926: Philosopher, mathematician, and computer scientist [[Hilary Putnam (nonfiction)|Hilary Putnam]] born. He will argue for the reality of mathematical entities, later espousing the view that mathematics is not purely logical, but "quasi-empirical".
File:Hilary Putnam.jpg|link=Hilary Putnam (nonfiction)|1926: Philosopher, mathematician, and computer scientist [[Hilary Putnam (nonfiction)|Hilary Putnam]] born. He will argue for the reality of mathematical entities, later espousing the view that mathematics is not purely logical, but "quasi-empirical".
File:Exploded electrolytic capacitor.jpg|link=Capacitor plague (nonfiction)|2003: [[Capacitor plague (nonfiction)|Capacitor plague]] affects several brands of [[portable envy]] devices.
 
File:Portable envy clock generator.jpg|link=Portable envy|2003: [[Portable envy]] components at risk of [[Capacitor plague (nonfiction)|capacitor plague]].
||1930 – The radio mystery program The Shadow airs for the first time.
 
||1964 – Ranger program: Ranger 7 sends back the first close-up photographs of the moon, with images 1,000 times clearer than anything ever seen from earth-bound telescopes.
 
||1971 – Apollo program: Apollo 15 astronauts become the first to ride in a lunar rover.
 
||1999 – Discovery Program: Lunar Prospector: NASA intentionally crashes the spacecraft into the Moon, thus ending its mission to detect frozen water on the moon's surface.
 
File:Portable envy clock generator.jpg|link=Portable envy|2003: [[Portable envy]] components linked to [[crimes against mathematical constants]].
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Revision as of 21:13, 20 June 2017

  • 1704: Mathematician and physicist Gabriel Cramer born. He will publish Cramer's rule, giving a general formula for the solution for any unknown in a linear equation system having a unique solution, in terms of determinants implied by the system.

    1704: Mathematician and physicist Gabriel Cramer born. He will publish Cramer's rule, giving a general formula for the solution for any unknown in a linear equation system having a unique solution, in terms of determinants implied by the system.

  • 1822: Chemist, physician, agronomist, industrialist, statesman, educator, and philanthropist Jean-Antoine-Claude Chaptal endows organization dedicated to detecting and preventing crimes against mathematical constants.

    1822: Chemist, physician, agronomist, industrialist, statesman, educator, and philanthropist Jean-Antoine-Claude Chaptal endows organization dedicated to detecting and preventing crimes against mathematical constants.

  • 1926: Philosopher, mathematician, and computer scientist Hilary Putnam born. He will argue for the reality of mathematical entities, later espousing the view that mathematics is not purely logical, but "quasi-empirical".

    1926: Philosopher, mathematician, and computer scientist Hilary Putnam born. He will argue for the reality of mathematical entities, later espousing the view that mathematics is not purely logical, but "quasi-empirical".

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