Births on January 23

Nikolay Umov

Born on January 23, 1846

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.

References

Nikolay Umov

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Events on 1846

11 May

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.
7 Jul

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

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

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

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

Births on January 23

Nikolay Umov

Born on January 23, 1846

References

Choose Another Date

Events on 1846

Mexican-American War

Conquest of California

Sewing machine

Zachary Taylor

Ether Dome