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Updated: 07/05/2018 08:30:01AM

The Coriolis effect

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By Betty Staugler

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Fact or fiction: Toilet bowl water spins clockwise in the northern hemisphere and counterclockwise in the southern hemisphere as a result of Coriolis effect. Before I give you the answer, let’s explore Coriolis a bit.

The Coriolis effect was described by French scientist Gustave de Coriolis in 1835. It is the perceived change in position of an intended target on the Earth’s surface due to the Earth’s rotation. An object that moves in a north-south or longitudinal direction will undergo apparent deflection to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.

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