Casimir effect
Science Dictionary
Casimir effect  (kāz'ə-mîr') Pronunciation Key
The effect of a net attractive force between objects in a vacuum, caused by quantum mechanical vacuum fluctuations creating radiation pressure. The radiation can be thought of as an atmosphere of virtual particles. The amount of radiation pressure on the objects is decreased in the gap between them, due to limits on the wavelength of the radiation in the gap. The gap is thus an area of lower radiation pressure, drawing the objects toward it. This force is strong enough to be of great importance at scales encountered in nanotechnology. The Casimir effect is named after Dutch physicist Hendrik Casimir (1909-2000). |
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Casimir effect
is always a great word to know.
So is doohickey. Does it mean:
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| a gadget; dingus; thingumbob. |
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