Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!rutgers!apple!vsi1!ubvax!igor!dsb@Rational.COM
From: dsb@Rational.COM (David S. Bakin)
Newsgroups: sci.electronics
Subject: Re: visible infrared?
Message-ID: <501@igor.Rational.COM>
Date: 31 Dec 88 04:32:36 GMT
References: <743@optilink.UUCP>
Sender: news@igor.Rational.COM
Reply-To: dsb@Rational.COM (David S. Bakin)
Organization: Rational
Lines: 15

From article <743@optilink.UUCP>, by brad@optilink.UUCP (Brad Yearwood):
 
> Which brings me to a question.  There is a second LED, presumably infrared
> emitting, in the Mouse System mouse, to the left of the red LED.  If you
> look carefully (particularly if you cover the red LED), the infrared LED
> appears to have a pale bluish-gray glow.

The Mouse System mouse is an optical mouse.  Light goes out, some light goes 
back in.  The second "LED" isn't a led, its a photosensor.  I would guess.

-- Dave
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Dave Bakin				    (408) 496-3600
c/o Rational; 3320 Scott Blvd.; Santa Clara, CA 95054-3197
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