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From: kaz@vision.crest.nt.com (Kaz Kylheku)
Subject: Re: Off topic response to an off topic message--> was:Re: Software
 Engineering and Dreamers
Date: 1997/06/09
Message-ID: <5nhjkg$c5u@bcrkh13.bnr.ca>#1/1
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References: <JSA.97May14201336@alexandria> <33947E2F.3F1A31A7@fuller.com>
 <5n2csg$1c6@mtinsc04.worldnet.att.net> <3394E51B.7A5A@flash.net>
Organization: Prism Systems Inc.
Newsgroups: comp.lang.c++,comp.lang.c,comp.lang.ada
Date: 1997-06-09T00:00:00+00:00
List-Id: <comp.lang.ada>


In article <3394E51B.7A5A@flash.net>,
Spaceman Spiff  <csweber@flash.net> wrote:
>Craig Franck wrote:
>> "H. Blakely Williford" <blakew@fuller.com> wrote:
>> >the way the particles in the upper atmosphere refract the light?
>> 
>> You are not helping the cause any. Color arises from how are brains
>> process light, and does not exist independently of our perceiving it.
>
>Sorry, Craig, you got this wrong.
>Light of different colors is light of different frequencies.

That is false, Spiff.  Colors can be perceived as a result of a pure frequency
or as a result of the mixture of two or more frequencies. The eye only responds
to two or three different regions of the spectrum. This is why only three
different kinds of phosphor elements in a CRT display are able to reproduce
such a wide variety of hues.

>The frequency of light emitted by some atom, does, in fact, 
>exist independent of our brains. It's called hertz.

>From this it does not follow that every brain perceives color in the same way,
or that color exists independently of the observer. I don't see the necessary
connection between frequency and the sensation of color.