Xref: utzoo sci.electronics:3910 rec.audio:8459 Path: utzoo!utgpu!water!watmath!clyde!att!rutgers!gatech!ncsuvx!ece-csc!jnh From: jnh@ece-csc.UUCP (Joseph Nathan Hall) Newsgroups: sci.electronics,rec.audio Subject: Re: Looking for Blue LEDs Message-ID: <3785@ece-csc.UUCP> Date: 26 Sep 88 09:46:22 GMT References: <1138@nmtsun.nmt.edu> <862@ritcv.UUCP> <255@rna.UUCP> <4422@lynx.UUCP> <871@ritcv.UUCP> <262@rna.UUCP> <1988Sep24.051114.15993@utzoo.uucp> Reply-To: jnh@ece-csc.UUCP (Joseph Nathan Hall) Organization: North Carolina State University, Raleigh, NC Lines: 22 In article <1988Sep24.051114.15993@utzoo.uucp> henry@utzoo.uucp (Henry Spencer) writes: In article <262@rna.UUCP> dan@rna.UUCP (Dan Ts'o) writes: >... But if you add >red light to green light, you get yellow light, not brown paint. Dept of Nitpicking: actually you don't get yellow light, you get light that *looks* yellow to an unaided human eye. A spectrophotometer (or just a prism) will reveal that it really still is red plus green. (I have seen people confused over this, so it seemed worth mentioning.) Well, now, that depends upon how broad the spectra of the aforementioned red and green sources are, doesn't it? I'm delighted that so many of our audiophiles are opti-philes (or whatever). This is certainly a more exciting topic, anyway, than CD longevity, mercury- filled cables (:-) sorry), Sony Portables and whether or not your car CD player skips ... sheesh! -- v v sssss|| joseph hall || 201-1D Hampton Lee Court v v s s || jnh@ece-csc.ncsu.edu (Internet) || Cary, NC 27511 v sss || the opinions expressed herein are not necessarily those of my -----------|| employer, north carolina state university . . . . . . . . . . .