|Coriolis force (ˌkɒrɪˈəʊlɪs)|
|a fictitious force used to explain a deflection in the path of a body moving in latitude relative to the earth when observed from the earth. The deflection (Coriolis effect) is due to the earth's rotation and is to the east when the motion is towards a pole|
|[C19: named after Gaspard G. Coriolis (1792--1843), French civil engineer]|
|Main Entry:||Coriolis force|
|Part of Speech:||n|
|Definition:||a force which, due to the Earth's rotation, acts on a body in motion; an apparent force deflecting the motion of an object or a fluid moving over the surface of a rotating body such as a planet or star|
|Etymology:||from C.G. Coriolis, French mathematician and engineer|
|Coriolis effect (kôr'ē-ō'lĭs) Pronunciation Key
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The observed effect of the Coriolis force, especially the deflection of objects or substances (such as air) moving along the surface of the Earth, rightward in the Northern Hemisphere and leftward in the Southern Hemisphere. The Coriolis effect is named after the French engineer Gustave Gaspard Coriolis (1792-1843).
A velocity-dependent pseudo force used mathematically to describe the motion of bodies in rotating reference frames such as the Earth's surface. Bodies moving on the plane of rotation appear to experience a force, leftward if the rotation of the reference frame is clockwise, rightward if counterclockwise. Such motion gives rise to the Coriolis effect.