🚀 go-pugleaf

MILDRED J. MOORE (mrmoore@ix.netcom.com) wrote:

: >pragmatic purposes you can "derive" various colors with combinations
: >of paints or filters (gels for you drama kids), but in the sense of
: >physics, it's all wave mechanics, and this "primary" quibble has no
: >substance or real meaning outside of a couple of pragmatic trades
: >which bear little relation to optical physics, because _every_ hue
: >exists in the continuum of vibration.  Yes, basic trig says you can
: >add phase angles and produce waves further along the spectrum, and
: >perhaps that new wave has a characteristic which, by sheerest chance
: >of evolution, means something to the human eye...but this is an
: >ultimately parocial and species-local event.  If you're red and you
: >want to be purple, you simply vibrate faster, you don't "add" or
: >"subtract" anything.
: >
: >I think people are getting preoccupied with a practical approximation
: >to the detriment of their grasp of the underlying reality, like those
: >simpletons who think Pi is 22/7.
: >
: >Joan

: I think we were trying to keep the conversation simple (there's a goal
: unachieved!) by restricing ourselves to gels instead of getting into
: wavelenghts and vibrations! Simply, we were discussing the "primary"
: colors as the refer to the additive way of achieving them (ie different
: beems of light shown in different combinations), and the point of it
: being that green, red and blue are primary because they create white
: light - all colors combined (as apposed to black, the total absense of
: light). My physics teacher refered to them as the "primary colors" and
: took the time to teach this system to us, so this can't be *quite* as
: pointless as you make out.

Not pointless.  Re--read what I said.  It is a soley _practical_
scheme of classification.  _My_ point was that it is ultimately an
UNREAL one.

Different quibble entirely:).

Joan

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