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Answered 2017-02-09 19:25:25

Unlike sound waves, which require a medium to travel, radio waves are electromagnetic waves requiring no medium. Visible light is an electromagnetic wave and needs no medium; comprised of photon particles, they travel in a vacuum much like a Baseball would, although massless.

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Answered 2017-02-09 14:45:15

Actually they do. Space is the medium in this case.

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Electromagnetic waves. They travel in space-time. Also, light waves dont require a medium. :) Brittany <3Luv u<3~<3~


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