/u/SenorPuff's posts in /r/askscience
Since light is wavelike are there visible waves that can pass obstacles like AC current gets past a capacitor?
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What is the long term net effect of getting, say, a cold, or the flu? Is your immune system better or worse as a result?
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If we could 'fall to the earth to China' wouldn't we actually just be on an orbital path with an apogee at ground level and a perigee below ground level on the other side of our orbit?
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Reading the Martian, he mentions oxygen toxicity from being in an environment with too much oxygen. Apart from the fire that doomed Apollo 1, why were they not concerned with oxygen toxicity in an all oxygen command pod?
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When the early universe was extremely dense, how much slower was time passing due to relativity? How long did the Photon Epoch 'feel'?
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Does the effect of the expansion of the universe on distant light, i.e. cosmological red shift, imply light itself loses energy over distance and time, since the only thing changing from a photon's perspective is the distance it must travel between it's initial and final point?
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