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afterglow |
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afterglow 1. the glow left after a light has disappeared, such as that sometimes seen after sunset 2. the glow of an incandescent metal after the source of heat has been removed 3. Physics luminescence persisting on the screen of a cathode-ray tube or in a gas-discharge tube after the power supply has been disconnected afterglow [′af·tər‚glō] (atomic physics) (meteorology) A broad, high arch of radiance or glow seen occasionally in the western sky above the highest clouds in deepening twilight, caused by the scattering effect of very fine particles of dust suspended in the upper atmosphere. (plasma physics) The transient decay of a plasma after the power has been turned off. 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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| ? Mentioned in | ? References in periodicals archive | ||
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| Although gamma-ray bursts are absorbed by Earth's atmosphere,
their afterglows shine at wavelengths, ranging from visible light to
radio, that can be recorded at ground level. The Swift spacecraft, launched by NASA late last November to study
gamma-ray bursts and their afterglows, recorded the X rays on Jan. The findings support the notion that these brilliant bursts and
their afterglows can enable astronomers to study galaxies that lie too
far away and are too dusty for the scientists to easily observe. |
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