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From: "Don K"
Subject: Re: Make infrared goggles inexpensively (like $10!!!)
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Date: Sun, 15 Sep 2002 13:49:24 GMT
"Jonathan Kirwan" wrote in message
> On Sun, 15 Sep 2002 12:00:47 +0100, "Prai Jei"
> >No comprendo. If you can see it, it is (by definition) not IR.
> Yes. The only possibility I could imagine here was anti-Stokes
> fluorescence with up-conversion phosphors. Unlikely.
> I think his argument on principle is that "very loud" 30kHz can be
> heard. Which isn't anywhere close to a valid analogy, regardless.
Why not? You can undoubtedly make plots of the minimum
discernable sensed stimuli (MDSS) vs. frequency for both
light and sound.
At each frequency, slowly increase the power level until you reach
the MDSS. This should be somewhat below the level where your
skin begins to burn or your cells disolve.
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