Portal:History of science/Selected anniversaries/July

Selected anniversaries in July

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July 1:


July 2:
  • 1850 - The self-contained gas mask is patented by Benjamin J. Lane


July 3:


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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:


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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


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


July 29:


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July 31: