Submitted by Ethan-Wakefield t3_1198h4o in askscience
Kedain t1_j9nzwwe wrote
Reply to comment by MrFartyBottom in What does it mean for light to be an excitation in the electromagnetic field? by Ethan-Wakefield
A wave is a succession of 3 points in water: a point lower than the resting level of the water, a point higher than this, and again a point lower before returning to the resting level.
[deleted] t1_j9o0oas wrote
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