Xref: utzoo sci.electronics:4055 rec.audio:8587
Path: utzoo!attcan!uunet!helios!scs!spl1!wheaton!fwells
From: fwells@wheaton.UUCP (Frank Wells)
Newsgroups: sci.electronics,rec.audio
Subject: Re: Looking for Blue LEDs
Message-ID: <795@wheaton.UUCP>
Date: 5 Oct 88 21:07:21 GMT
References: <1138@nmtsun.nmt.edu> <862@ritcv.UUCP> <255@rna.UUCP> <4422@lynx.UUCP> <871@ritcv.UUCP> <870@dlhpedg.co.uk>
Reply-To: fwells@wheaton.UUCP (Frank Wells)
Distribution: rec.audio,sci.electronics
Organization: Wheaton College, Il
Lines: 19

In article <870@dlhpedg.co.uk> cl@datlog.co.uk (Charles Lambert) writes:
>In article <871@ritcv.UUCP> cep4478@ritcv.UUCP (Christopher E. Piggott) writes:
>>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)?
>I just know there'll be a hundred optical physicists leaping to answer that
>one,  so I'll skip over it and ask a corollary.
>I guess that a yellow LED is really a red and a green LED in the same capsule:
>correct?

Somebody's probably already said it, but the primary PIGMENTS are Red,
Yellow, Blue (as opposed to COLORS, tints if you will.).

An LED, on the other hand electrically excites the diode material to produce
the yellow color.  You could have a yellow gun in a monitor, but you'd
have trouble getting all the colors right.

Hope this helps.

Frank Wells