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To: eleni121

Aiming a laser with sufficient power density at the pilot's position should be harshly punished, I agree.

Pointing an annoying laser, though, that probably is under the fed guidelines for commercial laser shows, though? I don't think so.

Laser beams spread out after a distance. They are pretty parallell out to a certain distance, then spread rapidly. When I run the equatin for a 532nm green laser with a 1mm aperture, I get a beam spread of 12 to 15 feet at 2 miles. 5 mW spread over that big a circle is .5 microwatts/cm2, and at one mile is about twice that, 1 uW.

If he's in a Laser Free Zone the limit is 50 nW/cm2, this is about two miles from an airport and a very low laser power.

The next zone out is the Critical Zone, running out 10 miles, and the laser beam limit is 5 uW/cm2- vey difficult to get with a 5 mW pointer.

Beyond that, is the Sensitive Flight Zone, and the beam limit there is a whopping 100 uW/cm2.

This is from

http://www.faa.gov/atpubs/AIR/chapter_29.htm

the FAA regs on outdoor laser operations. If a laser hits a plane below these levels and out of the designated zones, it's not a crime per se.

Using the Patriot Act for this case is not good and not a good harbinger of things to come. Remember when the Clinton justice department used RICO laws to silence abortion protest?


101 posted on 01/05/2005 7:27:43 AM PST by DBrow
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To: DBrow

This is the kind of information that we need to know and I appreciate that you provide your expertise in the matter.

Our govt should take heed before it willy nilly uses Patriot - needed legislation if used properly - for crimes that are not terror related.

Yes, I do remember well, RICO used for pro life protestors...horrible.


104 posted on 01/05/2005 7:32:51 AM PST by eleni121 (4 more years and then 4 more again)
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