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 25
21 Fig. IX. 120 … VIOLET BLUE CREEN YELLOW ORANGE RED Fig. IX. shows the luminosity of each part of the spectrum for skylight, sunlight, and gaslight, derived from Fig. VI., when the total illuminating effects of each to the eye are equal. The relative energies (capacities for doing work) of the light which is…
Watercolor painting · Light
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
