cosmic background radiation
Noun | 1. | cosmic background radiation - (cosmology) the cooled remnant of the hot big bang that fills the entire universe and can be observed today with an average temperature of about 2.725 kelvin |
单词 | cosmic background radiation | |||
释义 | cosmic background radiation
cosmic background radiationcosmic background radiationUnresolved radiation from space. The cumulative effect of many unresolved – and individually weak – discrete sources provides the background at radio, X-ray, and possibly other wavelengths. One important form is the microwave background radiation, which peaks at about 1 mm wavelength (i.e. a frequency of 3 × 1010 hertz). This is considered to be due to the hot Big Bang. See also COBE; gamma-ray astronomy; infrared background radiation; radio source; X-ray background radiation.cosmic background radiation[′käz·mik ¦bak‚grau̇nd ‚rād·ē‚ā·shən]cosmic background radiation
Synonyms for cosmic background radiation
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