Open AccessModified apparatus for the measurement of colour, and its application to the determination of the colour sensations
Publication year - 1905
Publication title -
proceedings of the royal society of london. series a, containing papers of a mathematical and physical character
Language(s) - English
Resource type - Journals
eISSN - 2053-9150
pISSN - 0950-1207
DOI - 10.1098/rspa.1905.0032
Subject(s) - collimator , optics , white light , spectrum (functional analysis) , materials science , mathematics , physics , quantum mechanics
The author describes a modification of his colour patch apparatus, in which two spectra are produced by the same beam that passes through the collimator and prisms. With this apparatus two distinct patches of pure or mixed colours can be placed side by side upon a white screen, and when a set of three slits is placed in each spectrum, mixtures in one spectrum can be matched with mixtures in the other, or with pure colours and white combined. This new apparatus, in which also the positions of the slits in the two spectra could be most accurately determined, was used for a redetermination of the visual sensation curves.