/u/trackday's posts in /r/askscience
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Does a single photon propagate as if it were a thin shell of an expanding sphere? Or as a vector with a single direction?
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If a single photon is released, does light propagate in all directions, or just in one direction not visible from the side or behind?
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If the genesis of live is a probable event, given the right conditions, shouldn't we be able to see evidence of multiple starts on the path to life?
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