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"Now, imagine the following:
I built a small raft of two balls close to each other.
The ball will be submerged a little by the weight (=gravity force)of the raft.
If I then heel the raft one ball goes deeper and one ball goes up.
The ball that goes deeper want to float up more as the ball that goes up.
So, The lower side tends to go up."
(Submitted by Noel Tue Mar 23, 2004 )
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