Researches in colour vision and the trichromatic theory (1913)
Abney, William de Wiveleslie, Sir, 1843-1920 · London : Longmans, Green · leaf 67
e side of a cube be covered with the prepared white card and behind it black velvet be hung, we have an ideal screen on which to receive the colour or white or both. A three-sided prism of equi¬ angular section would perhaps be better, as then there is no danger of the sides of the cube being in… … on a stand such as are fig. ig. found in all chemical laboratories, and the iron rod passes through a hole bored in its centre. The cube can be lowered or raised by unloosing the screw I, and any surface can be pre¬ sented to the light by twisting it round on the rod. There is room on the board C,…
Color Perception · Color blindness · Color vision
Internet Archive · Wellcome Library · Public domain (published before 1931). Free to use for anything.
