Green Lasers - Page 2

Euclidean · July 15th, 2005, 12:27 PM

Even then, dang man you can get a pretty sweet combat light in that price range that could effectively accomplish the same thing in most circumstances and be more useful overall.

Then again my C3 cost me about $115 and everyone laughs at me when I tell them that. Then I show them what 105 or so lumens really looks like and they all start asking where they can get one... so maybe the laser idea isn't so far out there.

To be fair I have heard of people using these bright lights against drunks and zonked out druggies to good effect. The super bright light is just too much to bear when your senses or not normal or your pupils are dilated, etc. Read some of the testimonials on Surefire's website sometime. A good light really is a self defense tool

But still, I just don't see what the laser will accomplish that this other piece of more conventional, more traditional gear won't.

RSSZ · July 15th, 2005, 04:47 PM

Come on guys, Don't frig with all them lasers,flashlights,saps,night sticks(PR 24's) mace,OC,ASP's. Forget spraying them,hittin' them,shineing a tiny weenie light in their eyes,yelling at them,or trying to stick/cut them with them tiny little boxcutters that you call fightin' knives ------- JUST PULL YOUR WEAPON AND SHOOT THEM---- Don't make this toooooooo hard------ It's not rocket science.---------- P.S Go ahead,I'm ready.

RSSZ · July 15th, 2005, 04:52 PM

Hey,Just noticed my new AVATAR thingie. How do ya'll like it ? I did it all by myself. PSSSSST, Thanks P95. You can carry anything that you want to.---------

P95Carry · July 15th, 2005, 04:55 PM

Thx RSSZ - I'll strap on the BFR!

.

RSSZ · July 15th, 2005, 06:50 PM

P95, Try>>> 52.0grs./H4198/Hornady 350gr. round nose outta that BFR ---I DARE YA !!-----THNX AGAIN-------

FortyFive · July 15th, 2005, 07:00 PM

RSSZ-the avatar shows up better in ral life posts. Glad you got one, does it have life time maint???

I like the idea of text within the avatar to say what you standfor or whatnot.

Euclidean · July 15th, 2005, 07:10 PM

Quote:

Originally Posted by RSSZ

Come on guys, Don't frig with all them lasers,flashlights,saps,night sticks(PR 24's) mace,OC,ASP's. Forget spraying them,hittin' them,shineing a tiny weenie light in their eyes,yelling at them,or trying to stick/cut them with them tiny little boxcutters that you call fightin' knives ------- JUST PULL YOUR WEAPON AND SHOOT THEM---- Don't make this toooooooo hard------ It's not rocket science.---------- P.S Go ahead,I'm ready.

RSSZ I gotta agree BUT... I have some of my other survival tools with me 24 hours a day. My firearm is often not immediately accessible. It's not such a bad idea to consider other ways to skin the proverbial cat.

P95Carry · July 15th, 2005, 07:23 PM

FortyFive "Lifetime maint' " - haha, well there is yet to be arranged a ''deal'' for steady supplies of Hornady 300 grain .454 casull rounds!!

Quote:

Try>>> 52.0grs./H4198/Hornady 350gr. round nose outta that BFR ---I DARE YA !!

Hahaha! Sounds ''fruity''!!

Don't ever use 4198 so screwed on that! My cuurent stock loads with 45-70 are, for BFR, 41.5 grains Rel7 shoving a 405 Lasercast. For the Ruger #1 rifle I stoke up a bit - currently using same bullet and with 52 grains 3031 (near compressed charge). Has a sorta ''zing'' to it - but once the 3031 is used I will switch to Rel7 for that - probably about 49 grains.

Tho BFR will take stiff loads there is a sorta optimal point where comfort and accuracy reach a sorta level ground - I think I am close to it.

The BFR round is probably a bit plus on 30,000 pressure but the Ruger #1 is almost certainly gettin' into the top 35,000 area.

QKShooter · July 15th, 2005, 07:57 PM

Monday, May 09, 2005

Green Laser Pointer Can Cause Eye Damage
EMBARGOED: Hold for release until Monday, May 9 at 3 p.m. CDT
Archives of Ophthalmology

ROCHESTER, Minn. -- Mayo Clinic ophthalmologists have found commercially available Class 3A green laser pointers can cause visible harm to the eye's retina with exposures as short as 60 seconds. The findings will be published in the May issue of Archives of Ophthalmology, http://archopht.ama-assn.org.

Dennis Robertson, M.D., Mayo Clinic ophthalmologist, conducted investigations with a green laser pointer directed to the retina of a patient's eye; the eye was scheduled for removal because of a malignancy. The green laser damaged the pigment layer of the retina, although it did not cause a measurable decrease in the visual function of the patient's eye. Dr. Robertson believes that longer exposures could harm vision, however. He also warns about potential damage from higher-powered green laser pointers.

"With the use of laser pointers that are more powerful than five milliwatts, there would likely be damage to the actual vision," he says. "Functional damage could occur within seconds."

Dr. Robertson does not advocate against use of green laser pointers; rather, he advocates against their misuse. "Green laser pointers are not a public health hazard at this time, but something people should be aware of," he says. "I'm raising concerns that people should be cautious when using green laser pointers not to point them at someone's eye or face. It's like how you use your knife -- carefully."

While pointing out risks of green laser pointers, he adds, "This is a potential hazard to people's eyes, but rarely is it going to be a practical hazard because the aversion reflex we have naturally will cause a person to blink or turn away from a laser light."

Green laser pointers are readily available in stores and on the Internet, according to Dr. Robertson. "Kids can buy these," he says. "They're not strictly regulated."

He adds that Class 3A green laser pointers are increasingly being used by amateur astronomers to pinpoint objects in the night sky and by the construction industry and architecture educators to point out details of structures in daylight.

Dr. Robertson conducted the eye exposure test with a consenting patient two weeks before eye removal due to ring melanoma. The patient's vision was 20/20, and the macular retina appeared healthy. Dr. Robertson exposed the patient's retina to light from a commercially available Class 3A green laser with an average power measured at less than five milliwatts: 60 seconds to the fovea, the center of acute vision; five minutes to a site 5 degrees below the fovea; and 15 minutes to a site 5 degrees above the fovea. Dr. Robertson had color photographs taken of the eye before and after exposure to the laser.

Dr. Robertson examined the patient's eye 24 hours after laser exposure. He found retinal damage characterized by yellowish discoloration involving the pigment layer beneath the fovea and at the site of the 15-minute exposure above the fovea. Each of these sites developed a grainy texture within six days. Study of the eye tissue under a microscope also confirmed damage to the pigment layer in the laser-exposed regions.

Dr. Robertson has been interested in the effects of lights on the human eye during his career, testing operating room microscopes, lights used in the clinic, red laser pointers and now green laser pointers.

Previously, he determined red laser pointers to be quite safe. "I tested different powers up to five milliwatts and could not create recognizable damage in the human eye with the red laser pointers," he explains. "So, at least a transient exposure to red laser pointers' light is only of trivial concern."

Dr. Robertson attributes the risk differential between red and green lasers to wavelength. "We know that the retina is infinitely more sensitive to shorter wavelengths," he says. "The green lasers appear much brighter to the human eye because of the shorter wavelength and can cause damage."

Dr. Robertson says Mayo Clinic's investigations have clearly demonstrated that green laser pointers can cause irreversible damage to the pigment layer of the retina.

RSSZ · July 15th, 2005, 08:47 PM

Euc, 10-4 your above post. You fine gentlemen can carry anything that you want. I wuz gust tryin' to get a rise in your heart rate.-------- I think that the green lasers that are being discussed is the ARGON LASER vs. the RUBY LASER(RED)---------

July 15th, 2005, 12:27 PM	#11
Euclidean VIP Member Join Date: Dec 2004 Location: Texas Posts: 3,213	Even then, dang man you can get a pretty sweet combat light in that price range that could effectively accomplish the same thing in most circumstances and be more useful overall. Then again my C3 cost me about $115 and everyone laughs at me when I tell them that. Then I show them what 105 or so lumens really looks like and they all start asking where they can get one... so maybe the laser idea isn't so far out there. To be fair I have heard of people using these bright lights against drunks and zonked out druggies to good effect. The super bright light is just too much to bear when your senses or not normal or your pupils are dilated, etc. Read some of the testimonials on Surefire's website sometime. A good light really is a self defense tool But still, I just don't see what the laser will accomplish that this other piece of more conventional, more traditional gear won't. __________________ I am The Armed Educator.

July 15th, 2005, 04:55 PM	#14
P95Carry Assistant Administrator Join Date: Mar 2005 Location: South West PA Posts: 25,339	Thx RSSZ - I'll strap on the BFR! . __________________ Chris - P95 NRA Certified Instructor & NRA Life Member. "To own a gun and assume that you are armed is like owning a piano and assuming that you are a musician!." If a BG dies as the result of pointing a gun at me, then he has merely succumbed to an occupational hazard of being a thug

July 15th, 2005, 07:00 PM	#16
FortyFive Senior Member Join Date: Dec 2004 Posts: 868	RSSZ-the avatar shows up better in ral life posts. Glad you got one, does it have life time maint??? I like the idea of text within the avatar to say what you standfor or whatnot. __________________ As you slide down the banister of life, May the splinters never point the wrong way. --- NRA Life Member

July 15th, 2005, 07:57 PM	#19
QKShooter Assistant Administrator Join Date: Dec 2004 Location: Runthegun, USA Posts: 18,751	GREEN LASER LIGHT ~ Just Found This Monday, May 09, 2005 Green Laser Pointer Can Cause Eye Damage EMBARGOED: Hold for release until Monday, May 9 at 3 p.m. CDT Archives of Ophthalmology ROCHESTER, Minn. -- Mayo Clinic ophthalmologists have found commercially available Class 3A green laser pointers can cause visible harm to the eye's retina with exposures as short as 60 seconds. The findings will be published in the May issue of Archives of Ophthalmology, http://archopht.ama-assn.org. Dennis Robertson, M.D., Mayo Clinic ophthalmologist, conducted investigations with a green laser pointer directed to the retina of a patient's eye; the eye was scheduled for removal because of a malignancy. The green laser damaged the pigment layer of the retina, although it did not cause a measurable decrease in the visual function of the patient's eye. Dr. Robertson believes that longer exposures could harm vision, however. He also warns about potential damage from higher-powered green laser pointers. "With the use of laser pointers that are more powerful than five milliwatts, there would likely be damage to the actual vision," he says. "Functional damage could occur within seconds." Dr. Robertson does not advocate against use of green laser pointers; rather, he advocates against their misuse. "Green laser pointers are not a public health hazard at this time, but something people should be aware of," he says. "I'm raising concerns that people should be cautious when using green laser pointers not to point them at someone's eye or face. It's like how you use your knife -- carefully." While pointing out risks of green laser pointers, he adds, "This is a potential hazard to people's eyes, but rarely is it going to be a practical hazard because the aversion reflex we have naturally will cause a person to blink or turn away from a laser light." Green laser pointers are readily available in stores and on the Internet, according to Dr. Robertson. "Kids can buy these," he says. "They're not strictly regulated." He adds that Class 3A green laser pointers are increasingly being used by amateur astronomers to pinpoint objects in the night sky and by the construction industry and architecture educators to point out details of structures in daylight. Dr. Robertson conducted the eye exposure test with a consenting patient two weeks before eye removal due to ring melanoma. The patient's vision was 20/20, and the macular retina appeared healthy. Dr. Robertson exposed the patient's retina to light from a commercially available Class 3A green laser with an average power measured at less than five milliwatts: 60 seconds to the fovea, the center of acute vision; five minutes to a site 5 degrees below the fovea; and 15 minutes to a site 5 degrees above the fovea. Dr. Robertson had color photographs taken of the eye before and after exposure to the laser. Dr. Robertson examined the patient's eye 24 hours after laser exposure. He found retinal damage characterized by yellowish discoloration involving the pigment layer beneath the fovea and at the site of the 15-minute exposure above the fovea. Each of these sites developed a grainy texture within six days. Study of the eye tissue under a microscope also confirmed damage to the pigment layer in the laser-exposed regions. Dr. Robertson has been interested in the effects of lights on the human eye during his career, testing operating room microscopes, lights used in the clinic, red laser pointers and now green laser pointers. Previously, he determined red laser pointers to be quite safe. "I tested different powers up to five milliwatts and could not create recognizable damage in the human eye with the red laser pointers," he explains. "So, at least a transient exposure to red laser pointers' light is only of trivial concern." Dr. Robertson attributes the risk differential between red and green lasers to wavelength. "We know that the retina is infinitely more sensitive to shorter wavelengths," he says. "The green lasers appear much brighter to the human eye because of the shorter wavelength and can cause damage." Dr. Robertson says Mayo Clinic's investigations have clearly demonstrated that green laser pointers can cause irreversible damage to the pigment layer of the retina. __________________ *Support Our Troops* How Very Fortunate You Are To Have Two Arms To Put Into A Ward 57 T-Shirt. DC MEMBERS ~ PLEASE BUY A WARD 57 SHIRT. Click Here.

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July 15th, 2005, 04:47 PM	#12
RSSZ Distinguished Member Join Date: Mar 2005 Location: USA Posts: 1,847	Come on guys, Don't frig with all them lasers,flashlights,saps,night sticks(PR 24's) mace,OC,ASP's. Forget spraying them,hittin' them,shineing a tiny weenie light in their eyes,yelling at them,or trying to stick/cut them with them tiny little boxcutters that you call fightin' knives ------- JUST PULL YOUR WEAPON AND SHOOT THEM---- Don't make this toooooooo hard------ It's not rocket science.---------- P.S Go ahead,I'm ready.

July 15th, 2005, 04:52 PM	#13
RSSZ Distinguished Member Join Date: Mar 2005 Location: USA Posts: 1,847	Hey,Just noticed my new AVATAR thingie. How do ya'll like it ? I did it all by myself. PSSSSST, Thanks P95. You can carry anything that you want to.---------

July 15th, 2005, 06:50 PM	#15
RSSZ Distinguished Member Join Date: Mar 2005 Location: USA Posts: 1,847	P95, Try>>> 52.0grs./H4198/Hornady 350gr. round nose outta that BFR ---I DARE YA !!-----THNX AGAIN-------

July 15th, 2005, 08:47 PM	#20
RSSZ Distinguished Member Join Date: Mar 2005 Location: USA Posts: 1,847	Euc, 10-4 your above post. You fine gentlemen can carry anything that you want. I wuz gust tryin' to get a rise in your heart rate.-------- I think that the green lasers that are being discussed is the ARGON LASER vs. the RUBY LASER(RED)---------