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someone1980
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Post subject:  Posted: Sun Jul 16, 2006 11:08 am |
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Joined: Mon Mar 13, 2006 11:19 pm
Posts: 2305
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ironbear wrote: Part of our safety training was, "If your safety glasses turn black and start smoking.....MOVE!"  That is some practical training. 
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e5usmc
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Post subject: Posted: Sun Jul 16, 2006 12:05 pm |
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Joined: Tue Jan 17, 2006 10:38 am
Posts: 793
Location: Eden Prairie
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ironbear wrote: At a previous job, I worked with industrial lasers. That was very interesting. Since they were infra-red you couldn't see them, but they were very good at cutting/burning things. Even at the low setting settings used to align optics paths, a quick pulse of an unfocused beam could still do things like burn a hole through a T-shirt or take off a small patch of hair! (Not me fortunately) Part of our safety training was, "If your safety glasses turn black and start smoking.....MOVE!" I think that if I had access to one of those, lasers would be to me what fire is to a pyromaniac...
_________________
There are only two kinds of people that understand Marines: Marines and the enemy. Everyone else has a second-hand opinion.
-Gen. William Thornson, U.S. Army
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the_interpreter
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Post subject: Posted: Sun Jul 16, 2006 11:33 pm |
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Joined: Wed Dec 07, 2005 12:31 am
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ironbear
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Post subject: Posted: Mon Jul 17, 2006 10:55 am |
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Joined: Tue Aug 16, 2005 1:08 pm
Posts: 546
Location: Roseville
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e5usmc wrote: I think that if I had access to one of those, lasers would be to me what fire is to a pyromaniac... Even though I have no conceiveable use for one, every once in awhile I find myself looking for something in a sealed tube CO2, in about the 150 watt range on ebay...
Fixed it. Sorry.
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cobb
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Post subject: Posted: Mon Jul 17, 2006 11:01 am |
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Joined: Sun Aug 07, 2005 2:47 pm
Posts: 3045
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Selurcspi
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Post subject: Posted: Mon Jul 17, 2006 11:15 am |
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Joined: Fri Feb 24, 2006 1:02 pm
Posts: 1569
Location: The Mild, Mild, West, Burbs
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<Ahrnold voice>
45 longslide with laser sighting.
Phase Plasma Rifle in the 40 watt range.
</Ahrnold voice>
_________________
NRA Certified Instructor
MADFI Certified Instructor
MN DNR Certified Instructor
UT BCI Certified Conceal/Carry Instructor
"If you expect the police to always be able to protect you, why are the ones who show up at crimes called 'detectives' instead of 'defenders'? Detectives try to find a criminal after they've committed a crime."
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ironbear
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Post subject: Posted: Mon Jul 17, 2006 4:19 pm |
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Joined: Tue Aug 16, 2005 1:08 pm
Posts: 546
Location: Roseville
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It would be very hard on the eyes.
As far as burning skin, the industrial lasers I worked with were not considered exceptionally dangerous (except to eyes). An unfocused (colliminated) beam wasn't as intense as a focused beam but would maintain its intensity over fairly long distances. A focused beam would have a very intense beam at its focal point (classic hour glass shape) but beyond the focal point would dissipate very rapidly. These types of laser are coliminated.
Flesh is full of water, so a burn would generate steam and smoke that would obscure the laser beam, so burning a hole through someone would be difficult (even if they cooperated by standing still ) Laser cuts are also automatically cauterized and sterilized!
My guess about the 300mw green laser is that if you could possibly give the person a light burn on bare skin, or if you could get them to stand still long enough, burn a hole in their leisure suit.
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cobb
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Post subject: Posted: Mon Jul 17, 2006 11:16 pm |
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Joined: Sun Aug 07, 2005 2:47 pm
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ironbear wrote: My guess about the 300mw green laser is that if you could possibly give the person a light burn on bare skin, or if you could get them to stand still long enough, burn a hole in their leisure suit. Kinda like a magnify glass and ants?
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ironbear
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Post subject: Posted: Tue Jul 18, 2006 11:00 am |
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Joined: Tue Aug 16, 2005 1:08 pm
Posts: 546
Location: Roseville
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SethB
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Post subject: Posted: Tue Jul 18, 2006 1:43 pm |
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Joined: Sun Aug 14, 2005 10:02 pm
Posts: 818
Location: downtown Mpls
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ironbear wrote: My guess about the 300mw green laser is that if you could possibly give the person a light burn on bare skin, or if you could get them to stand still long enough, burn a hole in their leisure suit. You can barely feel it.
It can pop balloons (especially red or black ones that are almost overinflated) quite nicely.
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