Template:Selected anniversaries/July 4

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  • 1804: Author Nathaniel Hawthorne born.

    1804: Author Nathaniel Hawthorne born.

  • 1868: Astronomer Henrietta Swan Leavitt born. She will discover the relation between the luminosity and the period of Cepheid variable stars.

    1868: Astronomer Henrietta Swan Leavitt born. She will discover the relation between the luminosity and the period of Cepheid variable stars.

  • 1900: Physicist and academic Ukichiro Nakaya born. He will create the first artificial snowflakes.

    1900: Physicist and academic Ukichiro Nakaya born. He will create the first artificial snowflakes.

  • 1934: Marie Curie, French-Polish physicist and chemist dies. She conducted pioneering research on radioactivity, discovering the elements polonium and radium.

    1934: Marie Curie, French-Polish physicist and chemist dies. She conducted pioneering research on radioactivity, discovering the elements polonium and radium.

  • 1934: Leo Szilard patents the chain-reaction design that will later be used in the atomic bomb.

    1934: Leo Szilard patents the chain-reaction design that will later be used in the atomic bomb.

  • 1935: Outbreak of Geometrical frustration exposes new class of crimes against mathematical constants.

    1935: Outbreak of Geometrical frustration exposes new class of crimes against mathematical constants.

  • 1951: Physicist and engineer William Shockley announces the invention of the junction transistor.

    1951: Physicist and engineer William Shockley announces the invention of the junction transistor.

  • 1983: Physician, confidence trickster, and suspected serial killer John Bodkin Adams dies.

    1983: Physician, confidence trickster, and suspected serial killer John Bodkin Adams dies.

  • 2005: The Deep Impact collider hits the comet Tempel 1.

    2005: The Deep Impact collider hits the comet Tempel 1.

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