Re: [APD] LED Technology. And now back to CF

["S. Hieber" <shieber at yahoo_com>]

Most of what gets past the phosphors gets absorbed by the glass tube. So UV still gets out, as evidenced by, for example, photogray eyeglasses turning darker under office lighting than under incadescent light. All those phosphates that Tide puts in its detergent so that your clothes look bright under sunlight (UV) might be slightly excited but probably not enough to really matter visually. A so called "black light" which leaks a lot more UV, of course, is another matter ;-)
sh
 
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----- Original Message ----
From: Chris Hotte <ecwh73 at gmail_com>
To: aquatic plants digest <aquatic-plants at actwin_com>
Sent: Tuesday, September 11, 2007 9:38:38 PM
Subject: Re: [APD] LED Technology. And now back to CF


S. Hieber wrote:
> The underlying UV wouldn't be visible to humans. The diff is that the diff phosphors in the flo 
I know how they work. I was saying it's possible escaping UV fluoresces 
what it hits. But... it's more likely the phosphor is narrow as you say 
at the wrong freq.

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