Path: utzoo!mnetor!uunet!mcvax!ukc!stc!root44!cdwf From: cdwf@root.co.uk (Clive D.W. Feather) Newsgroups: sci.misc Subject: Re: Color Message-ID: <493@root44.co.uk> Date: 9 Dec 87 15:46:24 GMT References: <162300002@uiucdcsb> <162300004@uiucdcsb> Reply-To: cdwf@root44.UUCP (Clive D.W. Feather) Organization: Root Computers Ltd, London, England Lines: 13 Carl Kadie Inductive Learning Group University of Illinois at Urbana-Champaign writes: >ii. There is "no such color" as purple! Mixing red and blue ink > causes your eye to react in a way which is not reproducible > by any single wavelength of light. The eye can see colours (for example, in afterimages) that cannot be reproduced by any combination of wavelengths of light ! There was an article in Scientific American c.1970 entitled "Phosphenes" that went into this.