1819 – Foucault – bio

Leon Foucault was born in Paris, France in 1819 and was a physicist. He is best known for his demonstration of the rotation of Earth under a swinging pendulum (now known as Foucault pendulums). He also gave the name “gyroscope” to another device he used to investigate the motion of the planet.

In 1850, Foucault and another French physicist named Fizeau, created a device to measure the speed of light. It showed that the speed of light is slower in water than in air.

PRECURSOR:
1564 – Galileo
1629 – Huygens
1642 – Newton
1773 – Young
1786 – Arago
1791 – Faraday
1802 – Wheatstone
1817 – gyroscope

CONCURRENT:
1819 – Fizeau
1822 – Lissajous

SUBSEQUENT:
1879 – Einstein
1887 – Michelson-Morley experiment

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