/u/Riddla26's posts in /r/askscience
Imaginary numbers give negatives when multiplied by themselves. i x 2 = -1, so what's so special about i? Isn't it just a way of representing -0.5 measured on a different axis (i, 2i, -i, -2i)?
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In terms of your longevity, cognitive function and energy levels throughout the following day, how big a difference to your brain is there between 6, 7 and 8 hours sleep per night?
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Can certain radiations only be absorbed by materials, or can they also be deflected? Could you make a radiation mirror?
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How much energy per cubic cm of water is lost from the point at which the kettle clicks, until the water is resting in the cup?
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Is it really that unhealthy for humans to consume energy drinks and caffeine to keep energy levels artificially heightened during the day, as opposed to having a balanced diet and enough sleep?
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