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The Coriolis effect is an apparent deflection of moving objects from a straight path when they are viewed from a rotating frame of reference. The effect is named after Gaspard-Gustave Coriolis, a French scientist who described it in 1835, though the mathematics appeared in the tidal equations of Pierre-Simon Laplace in 1778. The Coriolis effect is caused by the Coriolis force, which appears in the equation of motion of an object in a rotating frame of reference. Sometimes this force is called a fictitious force (or pseudo force), because it does not appear when the motion is expressed in an inertial frame of reference, in which the motion of an object is explained by the real impressed forces, together with inertia. In a rotating frame, the Coriolis force, which depends on the velocity of the moving object, and centrifugal force, which does not, are needed in the equation to correctly describe the motion.Perhaps the most commonly encountered rotating reference frame is the Earth. Freely moving objects on the surface of the Earth experience a Coriolis force, and appear to veer to the right in the northern hemisphere, and to the left in the southern. Movements of air in the atmosphere and water in the ocean are notable examples of this behavior: rather than flowing directly from areas of high pressure to low pressure, as they would on a non-rotating planet, winds and currents tend to flow to the right (left) of this direction north (south) of the equator. This effect is responsible for the rotation of large cyclones (see Coriolis in meteorology).In the inertial frame of reference (upper part of the picture), the black object moves in a straight line. However, the observer (red dot) who is standing in the rotating frame of reference (lower part of the picture) sees the object as following a curved path.
Naah unfortunately it isn't big enough. Although the coriolis effect does have an effect it is only just measureable on a huge tank that has been left to stand for a fortnight. In a conventional plughole there will be much greater effects due to the way you poured the water in, how you got out of the bat etc. Cyclones and anticyclones on the other hand are big enough for coriolis to have an effect. Air circles a low pressure area anticlockwise in the northern hemisphere and clockwise in the southern, for the same reason that if you look at a spinning object from one side it is going clockwise, and from the other anticlockwise.
No guarantees on spelling, I heard this mentioned in a video game, when you are attempting to snipe someone from a very far distance with a .50 cal sniper. I would like to know what it is, if it even exists.