births
Léon Foucault, French physicist and academic (died 1868)
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Léon Foucault
French physicist (1819–1868)
Jean Bernard Léon Foucault was a French physicist best known for his demonstration of the Foucault pendulum, a device demonstrating the effect of Earth's rotation. He also made an early measurement of the speed of light, discovered eddy currents, and is credited with naming the…Source: Wikipedia (CC BY-SA)
September 18
Day of the year
September 18 is the 261st day of the year in the Gregorian calendar; 104 days remain until the end of the year.Source: Wikipedia (CC BY-SA)