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- From: alizard@pil
- Newsgroups: alt.pagan
- Subject: Re: Space, the final frontier
- Message-ID: <gate.s64kwB1w165w@pil.UUCP>
- Date: Wed, 30 Dec 92 02:33:03 PST
- Lines: 64
-
- Re: Re: Space, the final frontier
- >Oh, why not join this happy mutual grilling?
- >
- >One item that keeps popping up in this thread is the idea of
- >getting cheap, clean electricity from orbiting power satellites.
- >
- >Not to be a spoilsport, but . . .
- >
- >What power density is necessary to transfer, say, 25% of North
- >America's power needs from orbiting satellites to Earth-based
- >power receivers?
-
- Depends on the number of satellites and receivers, with questions
- to be answered, like are we talking about receivers attached to
- individual housing units, communities, central station into the
- power grid?
-
- >What frequencies are most efficient for power transfers from
- >orbit to the Earth's surface?
-
- Don't have the reference in front of me... who wants to look it
- up? (microwave path losses vs. frequency)
-
- >How much microwave radiation does that expose people to?
-
- Design dependent. How much pollution does a car put out?
- (right... decide which car you mean, measure it and see. On a
- microwave power distribution system, you can do the measurements
- at the simulation level... given a system design.)
-
- >How does that compare with current microwave exposure levels?
- See above.
-
- >Based on our current understanding of the effects of microwave
- >radiation on human beings, what health hazards would this pose?
-
- I've seen quite a bit of argument on this topic... Soviet
- RF/microwave exposure standards were a fraction of US...
-
- >What level of health hazard would you consider acceptable?
-
- How about a level of cancers / 100,000 people 10% below that
- resulting from conventional fossil fuel plants? As a start.
-
- Something you missed... there has been discussion of using high
- powered laser systems as the energy transfer medium.
-
- > - - Steve
- >
- Blessings...
- A.Lizard
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