Portal:History of science/Selected anniversaries/July

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Selected anniversaries in July

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July 1:


July 2:
  • 1850 - The self-contained gas mask is patented by Benjamin J. Lane
  • 2001 - AbioCor self contained artificial heart created


July 3:


July 4:


July 5:


July 6:


July 7:
  • 1959 - 14:28 UT Venus occults the star Regulus. This rare event was used to determine the diameter of Venus and the structure of the Venusian atmosphere


July 8:


July 9:


July 10:


July 11:
  • 1735 - Mathematical calculations suggest that it was on this day that Pluto moved from the ninth to the eighth most distant planet from the Sun for the last time before 1979


July 12:


July 13:


July 14:
  • 1965 - The Mariner 4 flyby of Mars takes the first close-up photos of another planet


July 15:


July 16:


July 17:


July 18:


July 19:


July 20:


July 21:


July 22:


July 23:


July 24:


July 25:


July 26:


July 27:


July 28:
  • 2000 - Death of Abraham Pais, Dutch-born American physicist and historian (b. 1918)


July 29:
  • 1781 - Death of Johann Kies, German astronomer and mathematician (b. 1713)


July 30:


July 31: