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Old January 28th 05, 03:48 AM
Rip
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Have fun. You'll see a fairly bright green flash, or halo, depending on
the aiming accuracy. Even with a 100 mW output, at 3500 feet any diode
laser output will have expanded to many feet in diameter. You do the
math. Retinal input will be on the order of 1 microwatt, assuming a 2
foot diameter beam at the reception distance.
This entire laser blinding scam is a load of hogwash. My HP35 calculator
had my initials burned into it's case with a 5 WATT argon laser about 30
years ago. You could put your hand into the beam at the output of the 1
meter long tube for several seconds before feeling any heat. Would I
look into the beam? Hell no. Would I look into the beam of a 100 mW
diode laser 3500 feet away? Hell yes. For as long as you'd like. $10 a
minute. Of course, if I was a United pilot, I'd be looking for any way
to recoup my pension...help, help, I've been shot in the eye by a
laser!!! Pay me, pay me! And if I was a media weasel, I wouldn't even
need an excuse to make up a story like this one.

Happy Dog wrote:
"Happy Dog" wrote in message



"Bob Gardner" wrote in message news:W92dnXX_

Hello FBI surveillance software?

Anyway, I am now in possession of one brand new "Jasper" DPSS 5mw laser
from bigha.com. That's the same laser used in the recent media hyped
incidents at KTEB. I'm going to test the claims that pilots can be
visually impaired empirically. (Guess who the pilot is.) The weather is
perfect for his. -20 and clear. I plan to try it at distance of about
3500' which is as close as anyone is likely to get to a landing plane. I
happen to work near a perfect stretch of parking lot (one of the best
places in a busy metropolis to land if you really have to) which is
perfect for this. It's very runway-like. I'm going to do three things:

1. Measure the size of the beam at a measured distance.

2. Look into the beam for about 500ms after conditioning my eyes to
usual night flying light levels.

3. Have a skilled pistol marksman (cop friend) try to accurately hold
the beam steady at a measured distance both free hand and with support
and see what the wiggle area is.

If anyone else can think of anything else they'd like to see tried (no,
not in *my* plane) please post it here.

This isn't meant to be a scientific experiment or to become information
used instead of any government research or guidelines. OK?



You're crazier than a bedbug. Hope you have a good source of slightly used
retinas.



There's no risk. I'm calculating safety margins for exposure with the
assumption that the unit produces double its rated power. It'll still be
bright though.

moo