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Shower Curtain Attack
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Shower Curtain Attack
Question: Why does the shower curtain bell inward (toward you) when you are
taking a shower? Is that Bernoulli's principle at work?
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up-date April, 2001
A shower curtain will billow into the shower regardless of water temperature. A
person taking a cold shower is no safer from a shower curtain attack than
the person taking a hot shower. It is the movement of the water (and
thereby the surrounding air) that creates the pressure difference, not
the temperature of the air. Besides, if it was a thermal difference that
caused the curtain to move, then by all rights it should billow outwards,
since the tendency is to move from hot to cold.
Elizabeth Wilson
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Last
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April 2006
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