| 单词 | minus red |
| 释义 | > as lemmasminus red C2. Printing and Photography. Used to denote the colour obtained by subtracting a specified colour from white light, as minus blue, minus red, etc. (i.e. white light from which the blue, red, etc., wavelengths have been removed). ΚΠ 1901 J. Cadett & E. S. Shepherd Orthochromatic & Three-colour Photogr. 24 [In the Sanger Shepherd process] the prints for the minus green or pink, and minus blue or yellow positives are printed together on a special film. 1936 Discovery Jan. 2/1 It [sc. Monastral Fast Blue BS] is a true ‘minus-red’ pigment for three-colour printing. 1970 D. L. MacAdam Sources of Color Sci. 130 Red, green, and blue, being the colors in positive synthesis, minus red, minus green, and minus blue, or cyan blue, bright crimson and yellow are the printing colors. 1982 Jrnl. Air Pollution Control Assoc. 32 837/1 Twin SLR cameras were used, and the one with CIR film had a Wratten #12 yellow (or minus blue) filter. < as lemmas |
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