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- Newsgroups: comp.graphics
- Path: sparky!uunet!wupost!sdd.hp.com!ux1.cso.uiuc.edu!news.cso.uiuc.edu!aries.scs.uiuc.edu!mcdonald
- From: mcdonald@aries.scs.uiuc.edu (J. D. McDonald)
- Subject: Re: Is there a mathematical relationship RGB -> wavelength?
- References: <92225.171906POLOWINJ@QUCDN.QueensU.CA> <dangold1.713711275@vincent1.iastate.edu> <1992Aug13.233117.21185@cco.caltech.edu> <5760@m1.cs.man.ac.uk>
- Message-ID: <mcdonald.207@aries.scs.uiuc.edu>
- Sender: usenet@news.cso.uiuc.edu (Net Noise owner)
- Organization: UIUC SCS
- Date: Sat, 15 Aug 1992 00:42:17 GMT
- Lines: 21
-
- In article <5760@m1.cs.man.ac.uk> lilleyc@cs.man.ac.uk (Chris Lilley) writes:
-
- >In article <1992Aug13.233117.21185@cco.caltech.edu>
- >nyet@cco.caltech.edu (n liu) writes:
-
- >>>Keep in mind that our color sense is
- >>extremely crude, i.e. we can't tell the difference between pure magenta
- >>and a spectrum that contains a spike at blue and a spike at red.
-
- >Yes, all colours are seen as a single sensation.
-
- That is only true for objects covering a large field, with soft
- edges. In fact, if you have a small object or a sharp edge, it
- is not true due to chromatic aberration in the eye. The effect is
- very striking indeed and both psychedelic and disconcerting when viewing
- the compound color, especially with very red reds and very violet
- "blues".
-
-
-
- Doug McDonald
-