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Define Cosmic background radiation or Primal law

Cosmic background radiation: primal glow: The background of radiation is generally in the frequency range of 3 x 1011 to 3 x 108 Hz discovered in space in the year 1965. It is believed to be the cosmologically red-shifted radiation introduced by the big bang itself. Currently it has an energy density in bare space of around 4 x 10-14 J/m3.

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