Colour-blindness and Colour-perceptionK. Paul, Trench, Trübner & Company, Limited, 1891 - 311 pages |
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Page 30
... confuse colours , not because there is any colour loss or alteration in the physical basis of colour , but because they cannot see any difference between the colours . 1. The Physical Series of Colour . - It is evident that before we ...
... confuse colours , not because there is any colour loss or alteration in the physical basis of colour , but because they cannot see any difference between the colours . 1. The Physical Series of Colour . - It is evident that before we ...
Page 100
... confuse red and green . But he does confuse red and green , there- fore the theory is fallacious . According to the theory a blue - yellow blind should see spectral red and orange as red ; spectral yellow and blue as white and black ...
... confuse red and green . But he does confuse red and green , there- fore the theory is fallacious . According to the theory a blue - yellow blind should see spectral red and orange as red ; spectral yellow and blue as white and black ...
Page 109
... confuse ? 3. What effect has gaslight upon colours ? 4. Does distance make any difference in the appear- ance of colours ? 5. Are you fond of colours ? What is your favourite colour ? 6. Does the ordinary classification of colours ...
... confuse ? 3. What effect has gaslight upon colours ? 4. Does distance make any difference in the appear- ance of colours ? 5. Are you fond of colours ? What is your favourite colour ? 6. Does the ordinary classification of colours ...
Page 123
... confuse the colour - blind and force them to be guided by their colour - perception , whilst the quantity of colour is amply sufficient for the normal- sighted to pick out the colours with the greatest ease . The two most important test ...
... confuse the colour - blind and force them to be guided by their colour - perception , whilst the quantity of colour is amply sufficient for the normal- sighted to pick out the colours with the greatest ease . The two most important test ...
Page 135
... confuse orange with reds , pinks , and browns . They do not see as much difference between the modified units and the units themselves as the normal - sighted do . Thus they are rarely able to say , without comparison , whether a ...
... confuse orange with reds , pinks , and browns . They do not see as much difference between the modified units and the units themselves as the normal - sighted do . Thus they are rarely able to say , without comparison , whether a ...
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Common terms and phrases
absolute psycho-physical units after-image ANNA BLACKWELL blue-green bright brown candidate centre colour-blind person colour-perception coloured glass complementary colours contrast correctly crimson dark daylight defect definite colours Demy 8vo distinguish English Essays examination Fcap Fifth Edition four-unit Fourth Edition Frontispiece gaslight gray greenish Holmgren's Illustrations India junction large number LL.B LL.D luminosity Maps match mistakes modified unit neutral band neutral glasses normal-sighted person obtained olive-green orange painted physical series physical units Pilotage pink Plates Pocket Test points of difference Portrait Post 8vo Prof psycho-physical perception psycho-physical series psycho-physical units pure green purple red and green red end red rays retina rose Royal 8vo Sanskrit scotoma Second Edition seen shade simultaneous contrast Small crown 8vo spectroscope spectrum standard red test for colour-blindness theory Third Edition three-unit tion Translated Trinity House two-unit colour-blind violet violet end visual purple vols wools yellow and blue yellow-brown yellow-green Young-Helmholtz theory