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Births on September 20

James Dewar
1842Sep, 20

James Dewar

James Dewar, Scottish-English chemist and physicist (d. 1923)
Sir James Dewar (20 September 1842 – 27 March 1923) was a British chemist and physicist. He is best known for his invention of the vacuum flask, which he used in conjunction with research into the liquefaction of gases. He also studied atomic and molecular spectroscopy, working in these fields for more than 25 years.

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Events on 1842

  • 13Jan

    1842 retreat from Kabul

    Dr. William Brydon, an assistant surgeon in the British East India Company Army during the First Anglo-Afghan War, becomes famous for being the sole survivor of an army of 4,500 men and 12,000 camp followers when he reaches the safety of a garrison in Jalalabad, Afghanistan.
  • 9Mar

    Rancho San Francisco

    The first documented discovery of gold in California occurs at Rancho San Francisco, six years before the California Gold Rush.
  • 30Mar

    Crawford Long

    Ether anesthesia is used for the first time, in an operation by the American surgeon Dr. Crawford Long.
  • 14Aug

    Seminole Wars

    American Indian Wars: Second Seminole War ends, with the Seminoles forced from Florida to Oklahoma.
  • 7Dec

    Ureli Corelli Hill

    First concert of the New York Philharmonic, founded by Ureli Corelli Hill.