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Questions regarding electromagnetic radiation in the visible spectrum.

6 votes
0 answers
178 views

Is it possible to have two objects moving by sum speed of light (c) in the opposite direction? [closed]

Anyways we can take two objects where the sum of speeds are equaling c (speed of light). … But what happens if we reach 90% of the speed of light and an object flies on the opposite direction by 10% of speed of light? …