Births on April 11

William Wallace Campbell

Born on April 11, 1862

William Wallace Campbell, American astronomer and academic (d. 1938)

William Wallace Campbell (April 11, 1862 – June 14, 1938) was an American astronomer, and director of Lick Observatory from 1901 to 1930. He specialized in spectroscopy. He was the tenth president of the University of California from 1923 to 1930.

References

William Wallace Campbell

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Events on 1862

30 Jan

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

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.
13 Mar

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.
15 May

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.
22 Sep

Emancipation Proclamation
Slavery in the United States: A preliminary version of the Emancipation Proclamation is released.

Births on April 11

William Wallace Campbell

Born on April 11, 1862

References

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Events on 1862

USS Monitor

White dwarf

Emancipation Proclamation

Abraham Lincoln

Emancipation Proclamation