A
small attractive force which acts between two close parallel uncharged
conducting plates. It is due to quantum
vacuum fluctuations of the electromagnetic field,
which creates a lower energy
density of the vacuum
between the plates than outside them. The effect was predicted by Hendrick
Casimir in 1948 and verified in 1996 by Steven Lamoreaux. See What Is The
Casimir Effect? For more information.
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