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phonoatomic effect |
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phonoatomic effect [‚fō·nō·ə‚täm·ik i′fekt]
(acoustics) An effect that can be observed when a sound source of sufficiently high frequency is placed in liquid helium maintained at a very low temperature, less than 0.1 kelvin above absolute zero, wherein sound quanta, when they arrive at the liquid surface, have sufficient energy to knock helium atoms out of the liquid. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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