Coriolis force

Coriolis Effect

Due to the rotation of the Earth, winds get deflected in their original direction. This is called Coriolis force. It is named after the French scientist who first described the effect of this force in 1835 AD. Under the influence of this force, winds turn to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. This deflection was proved by a scientist named Farrel, hence it is called Farrel’s Law.

This can also be understood by the buy-ballot rule. According to this rule, “If a person stands with his back towards the wind in the Northern Hemisphere, then high pressure will be on his right side and low pressure will be on his left side.” The situation in the Southern Hemisphere will be just the opposite. The Coriolis force effect is zero at the equator. That is, there is no deflection in the direction of the winds on the equator. The maximum effect of this force is on the poles. That is, maximum deflection occurs in the direction of the winds at the poles.

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