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Births on January 23

Nikolay Umov
1846Jan, 23

Nikolay Umov

Nikolay Umov, Russian physicist and mathematician (d. 1915)
Nikolay Alekseevich Umov (Russian: Никола́й Алексе́евич У́мов; January 23, 1846 – January 15, 1915) was a Russian physicist and mathematician known for discovering the concept of Umov-Poynting vector and Umov effect.

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Events on 1846

  • 11May

    Mexican-American War

    President James K. Polk asked for a Declaration of War against Mexico, starting the Mexican-American War. It is approved on May 13.
  • 7Jul

    Conquest of California

    American troops occupy Monterey and Yerba Buena, thus beginning the conquest of California.
  • 10Sep

    Sewing machine

    Elias Howe is granted a patent for the sewing machine.
  • 24Sep

    Zachary Taylor

    Mexican-American War: General Zachary Taylor captures Monterrey.
  • 16Oct

    Ether Dome

    William T. G. Morton first demonstrated ether anesthesia at the Massachusetts General Hospital in the Ether Dome.