dallas said:
It's just microwaves, a lot like radio waves but I see your point. Instead, compare vibrating the earth just a little bit with a coal plant belching out smoke, C02, etc which just can't be good for the environment can it?
Btw, the japanese are planning on launching a sattelite like this, or getting somebody else to launch it, mabey china or the US, but either way, the japanese look to have a really cool geeky way of getting energy in the future. I think that it could work, I mean, the sun has to be a LOT brighter out in space where you don't have clouds or the atmosphere blocking the sun, so a lot more energy could get to the solar cells up in space.
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It doesn't matter how the energy is transmitted (microwaves or otherwise). The point is that more energy is being redirected to earth, where it will be used and converted to (mostly) heat. I guess it's still much better than burning coal (as long as it guarantees this coal won't be burned anyway, which is kind of hard), but it seems worse than ground-based solar panels, whose sole effect is to send the sun's energy away to other places on earth.
It seems to me that this is akin to turning up the sun's strength, although I don't know by how much.
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