Re: Looking for Blue LEDs

Article View: sci.electronics

Article #19750

#19750

From: Christopher E. Piggott
Date: Thu, 22 Sep 1988 20:04

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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

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Path: arc1-ca.pugleaf.net!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

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