bbgkk
bbgkk bbgkk
  • 14-02-2017
  • Chemistry
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Do all waves need material to travel through?

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gavingeorge
gavingeorge gavingeorge
  • 14-02-2017
No, things like electromagnetic waves do not. They travel by radiation, which does not need a medium. For example: Light from the sun travels through space, even though space is a vacuum. 
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