Why is it not necessary for radio telescope surfaces to be as smooth as a mirror?

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asked Feb 28, 2018 54.7k views

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RedGlow · Answer 1 · 2018-03-05T02:52:49+0000

It doesn't on account of radio waves are longer than optical waves. Radio waves are a sort of electromagnetic radiation with wavelengths in the electromagnetic range longer than infrared light. These long waves are in the radio locale of the electromagnetic range.

Why is it not necessary for radio telescope surfaces to be as smooth as a mirror?

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