Births on September 18

Léon Foucault

Born on September 18, 1819

Léon Foucault, French physicist and academic (d. 1868)

Jean Bernard Léon Foucault (UK: , US: , French: [ʒɑ̃ bɛʁnaʁ leɔ̃ fuko]; 18 September 1819 – 11 February 1868) was a French physicist best known for his demonstration of the Foucault pendulum, a device demonstrating the effect of the Earth's rotation. He also made an early measurement of the speed of light, discovered eddy currents, and is credited with naming the gyroscope.

References

Léon Foucault

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Events on 1819

19 Feb

South Shetland Islands
British explorer William Smith discovers the South Shetland Islands and claims them in the name of King George III.
1 Jul

Great Comet of 1819
Johann Georg Tralles discovers the Great Comet of 1819, (C/1819 N1). It was the first comet analyzed using polarimetry, by François Arago.
7 Aug

Battle of Boyacá
Simón Bolívar triumphs over Spain in the Battle of Boyacá.

Births on September 18

Léon Foucault

Born on September 18, 1819

References

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Events on 1819

South Shetland Islands

Great Comet of 1819

Battle of Boyacá