Given the composition of Earth's atmosphere, what is the most efficient way of wirelessly beaming energy from the stratosphere down to the surface?
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$\begingroup$ Neutrinos would be good. Creating and capturing them is the hard bit. $\endgroup$ – Jon Custer Dec 6 '19 at 19:24
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$\begingroup$ Yes, production cost of the radiation will have to be considered as well $\endgroup$ – DJG Dec 6 '19 at 19:27
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$\begingroup$ You might start at en.wikipedia.org/wiki/Space-based_solar_power $\endgroup$ – Jon Custer Dec 6 '19 at 21:27
