Rollbot Crams Ten Arms Onto One Wheel
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Turning heat into useable energy is pretty hard to do efficient, things like large scale steam generators are about the best we can do at the moment. This requires enough power to turn a lot of water into steam, which is very hard with just the power of the sun. Hence we have to concentrate a lot of sunlight in solar farms onto a central tower to convert the energy efficiently. 2b1af7f3a8