Report to the Science and Art Department of the Committee of Council on Education on the action of light on water colours : presented to both Houses of Parliament by command of Her Majesty (1888)
Russell, William James, Abney, William de Wiveleslie, Sir, 1843-1920, Great Britain. Department of Science and Art · London : Printed for H.M.S.O. by Eyre and Spottiswoode · leaf 13
curve of the electric (arc) light of the visible part of the spectrum together with Its luminosity curve, and It needs but a glance to show that the brightness of the visible spectrum bears no sort of relation to Its energy. The brightest part of the visible spectrum is in the yellow ; whilst, as… … VIII. The dark rays when falling on a pigment behave in H<:/lectiun of darh ray a. exactly the same manner as those which are visible ; some disappear, and others are transmitted, and though they give no colour to the pigment (it would appear of the same colour if they were excluded) are just as…
Watercolor painting · Light
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
