Definition of microwave background in English:

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microwave background


A weak uniform microwave radiation which is detectable in nearly every direction of the sky. It is believed to be evidence of the Big Bang.
Example sentences
  • Because of its near-perfect isotropy on the sky, the cosmic microwave background provides some evidence in favour of the Cosmological Principle.
  • The experimental detection of the cosmic microwave background was one of the great triumphs of the Big Bang theory.
  • In the past half century radio astronomers discovered remarkable things, including pulsars, quasars, molecules in space, and the cosmic microwave background, the first evidence in support of the big bang itself.

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Line breaks: micro|wave back|ground

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