The Earth’s Rotation Day
♦ The Earth’s Rotation Day is observed every year on January 8 celebeates the anniversary of French physicist Leon Foucault’s 1851 proof that the Earth rotates on its axis. In 470 BC, the Greeks claimed that the earth rotated on its own back. In 1851, French Physicist Leon Foucault showed the world's rotation with the assistance of a pendulum. ♦ In 1851 French Physicist Leon Foucault showed the world’s rotation with the help of a pendulum. Earth's Rotation Day is celebrated to mark the experiment by Leon Foucault to demonstrate the rotation of earth, and this is given importance over other different experiments that were conducted to prove the earth's rotation around its axis.