If you do that you are losing energy in heating the water though.

I'd have thought a frequency more akin to microwaves would have been better
for that.

Of course if they want to use focussed beams they need to unearth the stuff
done in the 70s and 80s by the US Defense department on the attempted use
of lasers as weapons. The problem was that the turbulance created by the
beam defocussed it just like we see with starlight.

I doubt adaptive optics could help you there.

Brian

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"Pat Flannery" wrote in message
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On 3/12/2010 1:46 AM, Brian Gaff wrote:
Presumably, you would need a site where no cloud
cover ever occurs, which presumably means high?

The beam might just cut its way through any intervening clouds by heating
the water vapor in them back up over its condensation point.

Pat