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radiation pressure |
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radiation pressurePressure on a surface resulting from electromagnetic radiation that impinges on it. The pressure is a result of the momentum carried by the radiation. When radiation is reflected rather than absorbed, the radiation pressure is doubled. Radiation pressure can sometimes be great enough to produce a force that is useful. radiation pressure [‚rād·ē′ā·shən ‚presh·ər] (acoustics) The average pressure exerted on a surface or interface between two media by a sound wave. (electromagnetism) The pressure exerted by electromagnetic radiation on objects on which it impinges. Radiation pressure Pressure exerted by electromagnetic radiation on objects on which it impinges. This pressure is caused by the fact that electromagnetic radiation transmits energy and possesses momentum. These pressures are very small. The effect is conspicuous in the case of a comet near the Sun, where the radiation pressure from the Sun forces the lighter cometary constituents away from the Sun. See Electromagnetic radiation How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| A heat-driven wind would have been hotter than the one that the researchers observed, and radiation pressure is too weak to drive that wind. The GOES satellite orbits were not stationary but changed with time as they were perturbed by several effects, the major ones being solar and lunar gravitational attractions, solar radiation pressure, and the inhomogeneous gravitational field of the earth. His research interests include magnetic, optical, and molecular data storage, near-field optics, and problems associated with radiation pressure. |
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