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3 years ago

7

How do you know the speed of an electromagnetic wave in a vacuum?

1 answer:

ycow [4]3 years ago

5 0

Electromagnetic waves need no matter to travel - they can travel through empty space (a vacuum). In a vacuum, all electromagnetic waves travel at approximately 3 x 108 m/s - which is the fastest speed possible. ...
Light traveling value through an optical Fibre is, 2 x 108 m/s. Hope that helps.

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