[linux-elitists] Must have free space lasers!
Fri May 4 11:51:44 PDT 2001
>>>>> "BW" == Ben Woodard <firstname.lastname@example.org> writes:
Me> I'm trying to think of how you'd do laser communication that
Me> -wasn't- line-of-sight. I mean, unless you don't count mirrors
Me> as line-of-sight. Can you do atmospheric bounce with lasers?
BW> The absorbtion of higher frequencies is quite noticable. That
BW> is why you really can't see that far.
Say that again, to yourself, and determine if you really mean it.
BW> However, radio goes through buildings and finally short wave
BW> radio bounces all around the world.
Let me try this again: laser, communication, not line-of-sight. Could
you create a short-wave laser? How big would it be? How would you
encode information into the laser signal? What would happen to that
signal if you were bouncing it off the atmosphere?
>> I guess if you had a powerful enough laser, eventually anything
>> that was blocking your line of sight would open up and you'd
>> have a nice clear path.
BW> You can use extremly low power if you use spread spectrum.
Spread spectrum... lasers?
Mr. Bad <email@example.com> | Pigdog Journal | http://pigdog.org/
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