Physicist Jean Bernard Léon Foucault has been honoured in today's interactive Google Doodle ... In 1850, he did an experiment using the Fizeau-Foucault apparatus to measure the speed of light.

Popular as the Foucault–Fizeau experiment, this served as a launch pad when he demonstrated Earth’s rotation. A “pendulum mania” swept across Europe and the U.S.

Fizeau's work with Foucault inspired him to attempt and calculate the speed of light, the value of which was neither known accurately, nor measured by means of a terrestrial experiment.

1851: Léon Foucault uses a pendulum to demonstrate the rotation of the Earth. It is the first direct visual evidence not based on watching the stars circle in the sky. Jean Bernard Léon Foucault ...

SIR JOSEPH LARMOR has kindly pointed out to me that it is incorrect, in the interpretation of Fizeau's experiment, to assume that the velocity of propagation of light is the group velocity, so ...

Fizeau, bouncing a beam of light off a mirror and through a cogged wheel, determined a speed of 313,000 kilometers per second. Foucault ran essentially the same experiment but used a rotating ...

Google is celebrating noted French physicist Léon Foucault's 194th birthday with an doodle on the home page. The doodle depicts Foucault Pendulum, invented by the physicist to demonstrate the ...

His calculation of 313,300,000 metres per second was successively improved upon through the work of succession of others including Léon Foucault, culminating in the series of experiments by the ...

In 1851 Foucault caused a sensation with his famous pendulum experiment, and the following year he used and named (but did not invent) the gyroscope – a device for measuring and maintaining ...