This is a file from the Wikimedia Commons

File:Newton's colour circle.png

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Newton's_colour_circle.png(398 × 394 pixels, file size: 20 KB, MIME type: image/png)

Summary[edit]

Description
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.

A higher resolution image of this would be nice, if someone has access to one.
Date
Source Opticks. 1704, from Book I, Part II, Proposition VI, Problem 2.
Author Isaak Newton

Licensing[edit]

Public domain

This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or less.


Dialog-warning.svg You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.

Original upload log[edit]

The original description page was here. All following user names refer to en.wikipedia.
  • 2008-01-06 08:54 Dicklyon 398×394× (20319 bytes) Slightly better version
  • 2006-08-12 00:01 Srleffler 0×0× (8092 bytes) Newton's colour circle, showing the colours correlated with musical notes and symbols for the known bodies within the solar system. A higher resolution image of this would be nice, if someone has access to one. (version lost by Mediawiki software)

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current16:17, 5 March 2010Thumbnail for version as of 16:17, 5 March 2010398 × 394 (20 KB)Maximkaaa{{Information |Description={{en|1="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 no
The following pages on the English Wikipedia link to this file (pages on other projects are not listed):

Global file usage

The following other wikis use this file: