Submitted by TheGandPTurtle t3_111g7s9 in askscience
mckulty t1_j8gsewc wrote
Reply to comment by masterofshadows in Light traveling through a medium that slows it. Does the same photon emerge? by TheGandPTurtle
> So then do we know for sure photons actually move and don't just vibrate or something
That's like asking "is it a particle or is it a wave?"
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