/u/Credulous7's posts in /r/askscience
On what order of magnitude is the number of generations it took for human DNA to reach the state it is today?
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Since light has momentum but no mass, would a particle with mass change its momentum upon bombardment with a photon?
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Considering that light has momentum (from relativity) is it possible to produce a beam of light that would produce a "thud" on its arrival (as opposed to, say, heat)?
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Would a constant electric field "wall" be able to act as a science fiction type force field if the field was strong enough?
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