Casimir-effect meaning

kăz'ə-mîr'
The effect of a net attractive force between objects in a vacuum, caused by the reduction of vacuum pressure in the space between the objects, where the wavelengths of vacuum fluctuations are more limited than in the space around the objects.
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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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The effect of the Casimir force.
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Origin of casimir-effect

  • After Hendrik Casimir (1909–2000), Dutch physicist who predicted its existence in collaboration with Dirk Polder (1919–2001), Dutch physicist
    From American Heritage Dictionary of the English Language, 5th Edition