Xref: utzoo sci.electronics:3867 rec.audio:8389 Path: utzoo!attcan!uunet!pyrdc!pyrnj!rutgers!rochester!ritcv!cep4478 From: cep4478@ritcv.UUCP (Christopher E. Piggott) Newsgroups: sci.electronics,rec.audio Subject: Re: Looking for Blue LEDs Keywords: blue blue blue, not yellow or red or green Message-ID: <871@ritcv.UUCP> Date: 22 Sep 88 20:04:53 GMT References: <1138@nmtsun.nmt.edu> <862@ritcv.UUCP> <255@rna.UUCP> <4422@lynx.UUCP> Reply-To: cep4478@ritcv.UUCP (Christopher E. Piggott) Organization: Rochester Institute of Technology, Rochester, NY Lines: 18 Hmm ... The reason I thought they would be effecient (since I guess I am the one who started it) is because I read that GREEN LED's are less effecient than red ones are, significantly. (I learned a neat lesson this week - if you're not sure, SHUT UP ... some advice from me to myself). Question: why are R.G.B. monitors Red, GREEN, blue, when GREEN is not one of the primary colors (being a combination of blue and yellow)? Why shouldn't it be red, YELLOW, blue? Projection televisions work the same way ... is it possible to emit green, and blue 180 degrees out of phase with the blue component of the green, to cancel out the blue and the green and make yellow? If not, how do you make yellow? Thanks, everyone; sorry about the gum-flapping, I'll know better next time. /Chris