Re: Electricity Transmission

In article <468e8854$0$20554$4c368faf@xxxxxxxxxxxxxx>,
Cockamamie Khomeini <Khomeini@xxxxxxxxxxxxx> wrote:

Sugna41 wrote:
Is it possible to transmit electricity on a large scale without
transmission lines? As an example, from a dam in northern Canada to
say New York city? I undersatnd there is such a thing developed as a
wireless battery charger.

Actually that is what radio is. You need to transmit 100.000 watts to
get one quarter watt fifty miles. Not very efficient.

Radio's not designed for power transmission; for one (major) thing, the
transmission is omnidirectional.

However, wireless power transmission (WPT) is quite feasible, even over
thousands of km, provided you have a direct line-of-sight of course. Do
a search for "wireless power transmission" and you'll find quite a few
results.

It's been studied pretty extensively as one part of space solar power,
since of course it's the only practical way to get the electricity down
to the ground. It works fine, though the longer your transmission
distance, the bigger your transmitter needs to be to keep a tight beam.

Best,
- Joe

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