French physicist Jean Bernard Léon Foucault created a Foucault pendulum in 1851. A lot of sensation was created by his creation. It was first exhibited in the Meridian of the Paris Observatory.

Google decided to mark his 194th birthday on Wednesday with an interactive doodle. The doodle displays the Foucault pendulum, a device that confirmed that the earth rotated. Foucault was born to a publisher in Paris on September 18, 1819. He pursued medicine, but he quit the field after he experienced fears for blood.

He started his career as a physicist soon after giving up medicine. To begin with the career of physicist, he assisted Alfred Donne and Hippolyte Fizeau.

He became popular after his theory about speed of light travelling at much slower pace through water than in air. The experiment was named as Foucault-Fizeau experiment. But, it was in the year 1851, when he created a lot of sensation by creating the Foucault pendulum.

The original pendulum was a 28-kg brass-coated lead bob and was suspended from the dome of the Pantheon with a 67-metre long wire.

"The interactive doodle is based on the Foucault pendulum, he created to demonstrate the effect of the earth's rotation and allow users to manipulate the swinging bob according to where on earth they happen to be", UK's The Independent said.