Xref: utzoo sci.electronics:3973 rec.audio:8532 comp.graphics:3282
Path: utzoo!attcan!uunet!husc6!ncar!stout!cook
From: cook@stout.ucar.edu (Forrest Cook)
Newsgroups: sci.electronics,rec.audio,comp.graphics
Subject: Re: Perceptual Color (was: Re: Looking for Blue LEDs)
Summary: a few more comments
Keywords: black/white -> color
Message-ID: <790@ncar.ucar.edu>
Date: 3 Oct 88 16:31:13 GMT
References: <1138@nmtsun.nmt.edu> <862@ritcv.UUCP> <255@rna.UUCP> <4422@lynx.UUCP> <871@ritcv.UUCP> <870@dlhpedg.co.uk> <6101@watcgl.waterloo.edu>
Sender: news@ncar.ucar.edu
Reply-To: cook@stout.UCAR.EDU (Forrest Cook)
Organization: Field Observing Facility, NCAR, Boulder, CO
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In article <6101@watcgl.waterloo.edu> awpaeth@watcgl.waterloo.edu (Alan Wm Paeth) writes:
>a flashing b/w light can take on the appearance of color.

This reminds me of one of those toys that consists of a spinning shutter over
a mask: you spin the shutter, close your eyes, stare towards a bright light
source such as the sun, and VOILA: colored stripes.
Some kind of aliasing I imagine.

So, if you take a fast response white light source and modulate its duty
cycle and frequency, will you fake the eyes into seeing colors?
Incandescent's probably switch too slow, that leaves such things as
Xenon strobes and LEDs.

White LEDs are probably possible: red, green and BLUE LEDs could be
put in close proximity and ~mixed~ with a diffuser to yield what would be
percieved as white light.  The three LED currents would probably need tweaking
to get true white.

[Adrift in a sea of ideas.]