An introduction to the study of colour phenomena, explaining a new theory of colour based entirely on experimental facts with applications to scientific and industrial investigations (1905)
Lovibond, Joseph Williams, 1833-1918 · London, E. & F.N. Spon, Limited; New York, Spon & Chamberlain · leaf 48
visions, and colour equivalence between the different scalesw^as as follows. Two slips of red glass in a light shade were made exactlyequal in colour, and considered as initial units, these werethen superimposed and matched by a single glass, which wasthen considered as of two colour units, this… … FIG. S
Color
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