On 9/5/2013 7:24 AM, ALBERTO VIEIRA FERREIRA MONTEIRO wrote:
David Hobby wrote:
Or are you worried about energy being beamed down inefficiently, producing
much more heat than just the amount from people using energy directly?
No, even if it was possible to beam energy with 100% efficiency...
it's still energy. It comes down, it must get out. If not, Earth gets
cooked.
Alberto--
Sorry, I don't understand how getting energy from space is inherently
worse than getting
energy by burning stuff that's been sitting in the ground for millions
of years. Either way,
it's "extra" energy. Plus, burning carbon compounds from the ground
adds to the greenhouse
effect, which just beaming power down would not.
There may be good arguments for conserving more rather than having cheap
clean power from
space, but yours isn't one.
---David
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