Posted by John Nichols on February 25, 2012 at 13:09:04 user Mcneacail.
In Reply to: Re: Tarboard is working again! posted by Mike Field on February 25, 2012 at 13:03:21:
Really quite simple, water is almost incompressible, so when it is moving and you stop it quickly you get pressure waves, enough to lift water. This is the same principle as water hammer, ie when you haouse pipes bang a lot.
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