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- Newsgroups: alt.cyberpunk.tech
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!rpi!newsserver.pixel.kodak.com!laidbak!tellab5!vpnet!uumeme!drac
- From: drac@uumeme.chi.il.us (Bruce Maynard)
- Subject: Re: Glasses
- Organization: UUMEME Public Access Xenix
- Date: Tue, 22 Dec 92 18:38:03 GMT
- Message-ID: <1992Dec22.183803.11593@uumeme.chi.il.us>
- References: <Sean_Hurley.0713@dream.uucp> <18506@borg.cs.unc.edu> <BzMM37.CDJ@ra.nrl.navy.mil>
- Lines: 35
-
- In article <BzMM37.CDJ@ra.nrl.navy.mil> humphrey@hightop.nrl.navy.mil (Jeff Humphrey [Jeffus]) writes:
- >In article <18506@borg.cs.unc.edu> deloura@cezanne.cs.unc.edu (Mark A. DeLoura) writes:
- >>In article <Sean_Hurley.0713@dream.uucp> Sean_Hurley@dream.uucp (Sean Hurley) writes:
- >>>But folks, this lazer idea, even at nano volts is a bad idea -- think about
- >>>it, you'll have a laser "burn" an image into the retina...
- >>Wrongo!
- >>I've tried it, a 1/4 microwatt laser into my eyeball-- worked fine for me,
- >>a tad blurry but definitely I could read the time off of the xclock that
- >>was being shown.
- >>
- >>And it was *red*.
- >> ---Mark
- >
- > I realize that people doing this research have explored the health risks but
- > I still can't help but think of a common sense laser precaution ...
- >
- > "Thou shalt not fire lasers into the eyes"
- >
- > Laser light has a number of health risks associated with it besides ...
- > 'burning your retina' ... things like prolonged exposure to radiation (which
- > is always assumed to be a bad thing), etc ...
- >
- > I think it's a really cool idea and the time has come ... but I'll be
- > hanging out until a lot of other people have worked with it for quite
- > some time before I go shooting beams into my eyes. It's a personal
- > choice ...
-
- Well, there's nothing "magical" about coherent (laser) light... just that,
- for a given wattage and compared to noncoherent (normal) light, the laser
- is much, much brighter 'cause it's channelled more efficiently. BTW, the
- currently recommended 'safe limit' for power level is .05 milliwatts as
- far as eye-exposure goes... 100 microwatts for extended exposure (5 seconds
- to indefinite time). As you can see, the power levels being discussed are
- >far< below this.
-
-