Since Einstein, scientists think that the substance that is "waving" when a light wave is transmitted is
A) air.
B) ether.
C) plasma.
D) phlogisten.
E) They don't think any material substance is waving.

Question

Quizplus · Accepted Answer

Einstein's theory of relativity and the subsequent understanding of light as electromagnetic waves mean that light does not require a medium to propagate, unlike sound waves which need air or another medium.

Since Einstein, Scientists Think That the Substance That Is "Waving