Quote:
Originally Posted by heero_yuy
Interesting, some water had been standing in the washbasin for a few hours. I carefully pulled the plug and guess what? No swirl whatsoever, just simply drained out.
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Heero,
My opinion is consolidated by your comments - it is a myth. But some leading egg-heads in the scientific world do not agree. You know what you and I say to them ? Unprintable.
The only factors that I know of which Earth can exert to cause reversal are :-
1. Coriolis.
2. Polar magnetic reversal.
3. The resultant vector force between gravity - a line drawn though the viewer and object to intersect the Earth`s CG and the centrifugal force - a radial line drawn through the viewer and object at right angles to the Earth`s rotational axis.
I cannot see any of these causing vortex spin and certainly not reversal between the hemispheres.
Coriolis is non-effective on such small masses.
Water is said to be non-magnetic - not strictly true, since water is composed of atom molecules and all molecules react to electromagnetism, but good enough to dispense with the magnetism issue.
The resultant force vector ? Remotely plausible, bit theoretical, but not convincing.
So, it is a myth.