In message , Pete Zahut
writes
would this work http://www.wimp.com/wineshoe

It's a video of someone removing a cork from a wine bottle using a shoe. The
cork comes out of the bottle but I don't see how - although I'm not the
world's greatest physicist, of course :-) IMHO the cork, if it moves at
all, should go inside the bottle because (and this is the bit that justifies
it being in a DIY group) it would seem to be the same principle as putting a
hammer head on a shaft, ie, shaft and head travelling downwards, shaft
stops, head carries on downwards and fits snugly on shaft. Wine bottle and
cork travelling in same direction, bottle stops, cork should continue same
way as the bottle, not go in the opposite direction - shouldn't it?


I reckon its the shock wave travelling through the incompressible fluid
(wine) causing a temporary increase in pressure against the cork

I've seen it done before - I attended a martial arts club in Indonesia
and one of them was showing me a few tricks. He thumped base of the
bottle with the palm of his hand and drove the cork out. I tried to
repeat his trick but couldn't . I can only think that my speed and focus
were not sufficient to do it


--
geoff