/u/non-troll_account's posts
Why are batteries (especially disposable, but also the ones inside a laptop battery etc) always cylinder shaped? wouldn't they be able to fit more battery into more rectangular volumes?
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Does there exist a chart or diagram which visually shows that the faster an object moves in a spacial dimension, the slower it moves in the time dimension?
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Could you correct my misunderstanding? mass is a property of a particle equaling it's total energy divided by c^2. This means that a photon with energy 1 eV would have a mass of 1 eV/89875517873681764 m^2/s^2 (meters squared per second squared). this is not zero. it's small, but small isn't zero.
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Could someone explain the differences between and advantages/disadvantages of the different antiseptics? iodine vs alcohol vs peroxide, vs etc?
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70 years ago today, scientists detonated the first atomic bomb. A mere 7 years later, the first thermonuclear bomb. Given the incredible amount of new knowledge gained by physicists over the last 70 years, why is it so hard for well-funded states to develop their own nuclear weapons today?
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Why can't self-driving cars use spectrometers to help understand what's on the road, like ice or oil?
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