CalendarZ

  1. Home
  2. On This Day
  3. July
  4. 1
  5. William Duddell

Births on July 1

William Duddell
1872Jul, 1

William Duddell

William Duddell, English physicist and engineer (d. 1917)
William Du Bois Duddell (1 July 1872, in Kensington, London – 4 November 1917, in Wandsworth, London) was an English physicist and electrical engineer. His inventions include the moving coil oscillograph, as well as the thermo-ammeter and thermo-galvanometer.

References

Choose Another Date

Events on 1872

  • 5Mar

    Railway air brake

    George Westinghouse patents the air brake.
  • 22Mar

    Gender equality

    Illinois becomes the first state to require gender equality in employment.
  • 22May

    Amnesty Act

    Reconstruction Era: President Ulysses S. Grant signs the Amnesty Act into law, restoring full civil and political rights to all but about 500 Confederate sympathizers.
  • 29Nov

    Battle of Lost River

    American Indian Wars: The Modoc War begins with the Battle of Lost River.
  • 9Dec

    P. B. S. Pinchback

    In Louisiana, P. B. S. Pinchback becomes the first African-American governor of a U.S. state.