/u/[deleted]'s posts in /r/askscience
If two-legged ambulation is more efficient than four-legged ambulation, why have horses become such an intimate part of human history?
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So the colors we see can be placed on a linear chunk of the electromagnetic spectrum, red to violet. Why can we represent them in a circular "color wheel" then?
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Space and the universe is expanding. Does this mean the gravitational constant will change over time?
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I wish I understood virtual particles. What does a physicist mean exactly when they talk about a virtual particle vs. a "real" one?
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