Monday, January 8, 2024

Earth's Rotation Day


Earth's Rotation Day is celebrated on January 8 every year to mark the anniversary of the demonstration by French physicist Léon Foucault of the Earth's rotation on its axis.

In 1851, Foucault accomplished this through an experiment using a pendulum, famously known as the Foucault Pendulum. It provided visual proof of Earth's rotation. The pendulum's plane of oscillation rotates over time, a phenomenon that can only be explained by the Earth rotating beneath it. Foucault's pendulum became a symbol, which is displayed in museums worldwide. January 8 was chosen to mark the day Foucault proved that the Earth rotates on its axis.


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