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  3. March
  4. 4
  5. Jacob Robert Emden

Births on March 4

1862Mar, 4

Jacob Robert Emden

Jacob Robert Emden, Swiss astrophysicist and meteorologist (d. 1940)
Jacob Robert Emden (4 March 1862 – 8 October 1940) was a Swiss astrophysicist and meteorologist. He is best known for his book, Gaskugeln: Anwendungen der mechanischen Wärmetheorie auf kosmologische und meteorologische probleme (Gas spheres: Applications of the mechanical heat theory to cosmological and meteorological problems), published in 1907. It presents a mathematical model of the behaviour of polytropic gaseous stellar objects under the influence of their own gravity, known as the Lane-Emden equation.

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Events on 1862

  • 30Jan

    USS Monitor

    The first American ironclad warship, the USS Monitor is launched.
  • 31Jan

    White dwarf

    Alvan Graham Clark discovers the white dwarf star Sirius B, a companion of Sirius, through an 18.5-inch (47 cm) telescope now located at Northwestern University.
  • 13Mar

    Emancipation Proclamation

    American Civil War: The U.S. federal government forbids all Union army officers from returning fugitive slaves, thus effectively annulling the Fugitive Slave Act of 1850 and setting the stage for the Emancipation Proclamation.
  • 15May

    Abraham Lincoln

    President Abraham Lincoln signs a bill into law creating the United States Bureau of Agriculture. It is later renamed the United States Department of Agriculture.
  • 17Aug

    Dakota War of 1862

    American Indian Wars: The Dakota War of 1862 begins in Minnesota as Lakota warriors attack white settlements along the Minnesota River.

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