How was cosmic background radiation discovered?

Answer 1

It was predicted by Ralph Alpher,Robert Herman George Gamow and some others. in 1948. as relic of Big bang.

When Robert Wilson and Arno Penzias were testing the Holmodel horn antenna for satellites on May 20, 1964, they discovered it.

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Answer 2

Hazel Asher

Arno Penzias and Robert Wilson, who won the 1978 Nobel Prize in Physics for their discovery of cosmic background radiation, detected a faint microwave radiation coming from all directions in the sky in 1965, which was consistent with the predictions of the Big Bang theory.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.