# Coriolis Force

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The Coriolis force is an inertial force observed in rotating systems in conjunction with the conservation of angular momentum. It takes the mathematical form where is mass, is angular velocity, and is the linear velocity. The expression first appeared in a paper written in the year 1835 by French scientist Gaspard-Gustave de Coriolis in connection with water wheels where he referred to is as a compound centrifugal force. The Coriolis force amounts to a transverse deflection of the radial component of motion relative to any arbitrarily chosen polar origin. It is a consequence of Newton's first law of motion and it is best observed in atmospheric cyclones, eccentric planetary orbits, and in precessing gyroscopes.