medium of light

does light needs medium to convey in non-vacuum and vacuum case? if yes, what is the "medium"?

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  • 1 decade ago
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    no, light do not need a medium to travel.

    In the 19th century, it was believe that light need a medium call "ether" (i think) in order to travel, it was later proof it was not the case.

    I hope my answer is helpful!

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