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Comment Re:So? (Score 2, Insightful) 691

Of course, they could have turned down the President. Of course, in that case they...could have had their regulatory ass handed to them for the next how ever many years this administration was in power over every little infraction.

Sure sounds like a thuggish shakedown to me. "Nice company you got there...it'd be a shame if something happened to it." The fact that everyone is (understandably) hating on BP right now makes Obama's shakedown no less despicable--and a very dangerous precedent (though admittedly with this president the precedent of shaking down corporations has already been set, this is just taking it to new levels).

Comment Re:WTF? Just ask the patient. (Score 1) 981

Cool! (Not that you had this problem, but that you can see UV light.) I wish I could see UV...working with high-power UV lasers always makes me a bit nervous because I never know if I accidentally took a shot in the eye (which can, incidentally, cause cataracts). With a visible laser you can obviously see it, even with an IR laser you at least know when you develop a small blind spot haha...but take a shot with a UV laser and you wouldn't know it, you'd just end up getting cataracts earlier than you otherwise would.

Comment Re:Effect on humans? (Score 1) 464

I'm surprised specular reflection of a 500 mW beam would be enough to cause damage. I think the rule of thumb is ~5mW is safe, so they would probably need at least 20 mW or so to cause much of a problem...getting 4% of a scattered beam into your eye seems unlikely. Also a 500 mW pump sounds kind of low for a Ti:Saph, maybe that was more?

I toured a lab recently (a federal lab no less, at NIST) and they had half a dozen class IV lasers on all the time, and didn't think anything of it! Would not feel comfortable working there haha...even looking at scattering off of some of the optics seemed a little too bright to be safe.

Comment Re:Effect on humans? (Score 1) 464

Most of the visible-wavelength laser PhD's I've worked with have had partial blindness in some area because they've cooked their retinas.

What?? I don't (personally) know anyone who has blinded themselves, and I know a lot of laser guys (myself included).

And I'd say near-IR lasers are more dangerous--they still get focused to the back of the eye and absorbed there (they don't get absorbed at the front like you suggested), but you can't see it (in fact I read that the way to know if you're getting hit is if you hear a popping sound from your eye as the fluid boils!). Longer wavelengths (longer than 1.4 or so) either don't get focused by the lens in your eye, or don't get absorbed in the back of your eye, and so you can sustain much higher power without damage.

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