Hey Chuck, So when you see me in my Oakley's (I'll have to borrow my son's) looking down the business end of my scope, I'm not just looking cool, I'm collimating... B) I bought one of the green lasers last month but haven't used it much yet. It's like all technology it has a light and a dark side to it. I love the fact that in a small group I can point out specific stars or constellations instead of the people squinting to see if they are looking at the right thing. I'm excited about them at a public event but I'm glad this thread came out about the possible misuse of the lasers. Something to think about. Thanks for the info C.H. Tnx de n7zi Gary "Why buy something for ten bucks when you can make it for a hundred.", J.R. -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com]On Behalf Of Chuck Hards Sent: Monday, August 11, 2003 7:25 PM To: utah-astronomy@mailman.xmission.com Subject: RE: [Utah-astronomy] Green laser backlash Hi Gary: Laser safety-glasses are essentially colored filters, the color chosen so as to absorb the particular laser wavelength you are working with. The best ones, like sunglasses, have the filter material homogenously distributed in the plastic lens itself, so a scratch doesn't open a potentially dangerous "leak". You have to choose the safety glasses to match the laser you're using. Edmund used to sell several wavelengths, but I haven't checked in years. I just performed an experiment. Held a #58 green filter in front of my class IIIa laser level. The spot was attenuated severely, easily lost at least 80% of it's intensity. Laser light is still just light, and will respond to filtration the same as incoherent light. Chuck --- Gary Liptrot <n7zi@comcast.net> wrote:
Does anyone know what the characteristics (specs) are for a pair of "Laser Resistant Glasses"? What makes them resistant to the laser effects.
__________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy