Births on April 11

Bernhard Schmidt

Born on April 11, 1879

Bernhard Schmidt, Estonian-German astronomer and optician (d. 1935)

Bernhard Woldemar Schmidt (11 April [O.S. 30 March] 1879, Nargen – 1 December 1935, Hamburg) was an Estonian optician. In 1930 he invented the Schmidt telescope which corrected for the optical errors of spherical aberration, coma, and astigmatism, making possible for the first time the construction of very large, wide-angled reflective cameras of short exposure time for astronomical research.

References

Bernhard Schmidt

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Events on 1879

8 Feb

Sydney Riot of 1879
The England cricket team led by Lord Harris is attacked during a riot during a match in Sydney.
15 Feb

Rutherford B. Hayes
Women's rights: US President Rutherford B. Hayes signs a bill allowing female attorneys to argue cases before the Supreme Court of the United States.
5 Apr

War of the Pacific
Chile declares war on Bolivia and Peru, starting the War of the Pacific.
21 Oct

Incandescent light bulb
Thomas Edison applies for a patent for his design for an incandescent light bulb.
22 Oct

Thomas Edison
Using a filament of carbonized thread, Thomas Edison tests the first practical electric incandescent light bulb (it lasted 13½ hours before burning out).

Births on April 11

Bernhard Schmidt

Born on April 11, 1879

References

Choose Another Date

Events on 1879

Sydney Riot of 1879

Rutherford B. Hayes

War of the Pacific

Incandescent light bulb

Thomas Edison