背はい景けい放ほう射しゃ

noun

background radiation

Scientific term used in physics and astronomy, often referring to cosmic microwave background radiation or other diffuse radiation fields.

• 宇う宙ちゅう背はい景けい放ほう射しゃはビッグバンの証しょう拠ことされている。

  The cosmic background radiation is considered evidence of the Big Bang.