/u/thetimujin's posts in /r/askscience
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When a person doesn't have sex\masturbate for a while, they grow hornier. What mediates this? Is there some kind of horniness hormone accumulating? Or is it just mental?
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In Feynman's QED he keeps mentioning a mysterious number j which relates to how electrons interact with photons. He never explains what it is. What is it?
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How accurately can we tell someone's age on a purely biological basis? Like if there are no records or memories about when someone was born, but we can do a medical examination, how much can we learn?
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