“The rotation of the Earth is the phenomenon that facilitates the day-night cycle. The rotation not only determines the day and night but is also responsible for the seasons and temperature of the earth. It is also responsible for the Coriolis effect i.e. the detection of air currents. A special day is dedicated to recognizing the rotation of the planet on its axis called the Earth’s Rotation Day. The Earth’s Rotation Day is celebrated on 8 January every year to commemorate the discovery of French physicist Leon Foucault in 1851. His “Foucault pendulum” has provided experimental proof of the Earth’s rotation on its axis at an inclination of 23.45 degrees from the plane of its orbit around the Sun. Earth’s Rotation Day is a significant day that marks the epic discovery that reveals how we experience day and night, different seasons and see constellations in the sky. The earth completes one rotation on its axis in 24 hours at an inclination of 23.5 degrees. The rotation is also responsible for determining the length of day and night.
The Rotation of Earth Day
