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(rick fetters) wrote in message . com...
At this site you will find a picture of a focault pendulum clock that
has a cone shaped piece of metal from a hydroelectric generating
station. nThe metal is 'said' to be really hard, but it has been
abraded/contorted into a very interesting shape. The question
is....what part is it, what was it's function? It is interesting to
note that the very tip shows little deformation/abrasion; could it be
the 'end' instead of the 'point' of an apparatus in the flow of water?
rick

Neat picture... the deformation is almost certainly due to cavitation.
Cavitation damage is like having a lot of little explosions at the
surface of the part.

Tim.