What do physicists think of XKCD's claim that we still don't understand the mechanics of ice skating, piling sand, or sticking a balloon to the wall? - Quora
What are some great math and/or physics and/or computer science related short webcomics (like xkcd for instance)? - Quora
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visible light - What's the physics behind XKCD #2027 (time between lightning flash and radio wave burst)? - Physics Stack Exchange
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