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A process in which energetic particles or energetic waves travel through a medium or space.

23 votes
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Is x% noise on TV due to Big Bang's background radiation?

I've heard quite a few times that a certain percentage (usually claimed 1%) of the noise you see on TV comes from the background radiation of the Big Bang. Is this a myth? … If not, I seems like a reasonably complicated claim to substantiate (interference of other radiation, etc.). …
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