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A popular misconception is that the Coriolis effect determines the direction in which bathtubs or toilets drain, and whether water always drains in one direction in the Northern Hemisphere, and in the other direction in the Southern Hemisphere. In reality, the Coriolis effect is a few orders of magnitude smaller than other random influences on drain direction, such as the geometry of the sink, toilet, or tub; whether it is flat or tilted; and the direction in which water was initially added to it. Note that toilets typically are designed to only flush in one rotation, by having the flush water enter at an angle.

This is less of a puzzle once one remembers that the earth revolves once per day but that a bathtub takes only minutes to drain. When the water is being drawn towards the drain, the radius with which it is spinning around it decreases, so its rate of rotation increases from the low background level to a noticeable spin in order to conserve its angular momentum (the same effect as ice skaters bringing their arms in to cause them to spin faster).

2006-12-01 02:23:34 · answer #1 · answered by alxx 2 · 1 0

Yup. Common myth. Water will flow down the plug-hole according to the shape of the bowl. The coreaolis effect has no significant bearing on that. If water flows down a plug like that why wouldn't rain?

2006-12-01 02:03:22 · answer #2 · answered by Paul E 2 · 3 1

Oh, yet Earth already rotates contained in the anti-clockwise route. purely stand on the North Pole and also you would possibly want to work out Earth is rotating contained in the anti-clockwise route. of direction, Earth also rotates contained in the clockwise route, mutually. purely stand on the South Pole and also you would possibly want to work out Earth is rotating contained in the clockwise route. .

2016-11-30 00:27:34 · answer #3 · answered by minogue 4 · 0 0

This is the Coriolis effect. The earth's magnetic full affects the flow of water. If you move from the northern to the southern hemisphere the water will flow in the opposite way.

2006-12-01 02:07:14 · answer #4 · answered by monkeymanelvis 7 · 0 4

this depends on how close u are to the equator the magnetic pull

2006-12-01 02:02:48 · answer #5 · answered by ag 3 · 0 4

as above

2006-12-01 02:07:03 · answer #6 · answered by Anonymous · 0 1

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