File:Newton's color circle.png
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KirjeldusNewton's color circle.png |
English: "In a mixture of primary colours, the quantity and quality of each being given, to know the colour of the compound."
Throughout Opticks, Newton compared colours in the spectrum to a run of musical notes. To this purpose, he used a Dorian mode, similar to a white-note scale on the piano, starting at D. He divided his colour wheel in musical proportions round the circumference, in the arcs from DE to CD. Each segment was given a spectral colour, starting from red at DE, through orange, yellow, green, blew [sic], indigo, to violet in CD. (The colours are commonly known as ROY G BIV.) The middle of the colours—their 'centres of gravity'—are shown by p, q, r, s, t, u, and x. The centre of the circle, at O, was presumed to be white. Newton went on to describe how a non-spectral colour, such as z, could be described by its distance from O and the corresponding spectral colour, Y. |
Kuupäev | |
Allikas | Opticks. 1704, from Book I, Part II, Proposition VI, Problem 2. |
Autor | Isaak Newton |
Public domainPublic domainfalsefalse |
This file is in the public domain because Image was created in 1704 by Isaak Newton
This template must not be used to dedicate an uploader's own work to the public domain; CC0 should be used instead. This work must carry justifications for free usability in both the United States and its country of origin. |
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viimane | 18. november 2012, kell 16:44 | 788 × 810 (277 KB) | Marmozsdx (arutelu | kaastöö) | {{subst:Upload marker added by en.wp UW}} {{Information |Description = {{en|"In a mixture of primary colours, the quantity and quality of each being given, to know the colour of the compound." Throughout Opticks, Newton compared colours in the spectru... |
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