/r/askscience
When thermal energy, and kinetic energy, is transfered, is there a particle that actually moves between substances? Does it have a name, like how Light is made up of photons?
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Why can I track a moving object with my eyes smoothly, but not follow a line on the floor without 'stuttering'?
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If I went back in time to the renaissance with my laptop, what could I construct to keep it charged using materials and technology of that time?
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How come when when you wipe to hard after going to the bathroom that there's blood that you never get an infection from fecal matter getting into your bloodstream?
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