Colour-blindness and Colour-perceptionK. Paul, Trench, Trübner & Company, Limited, 1891 - 311 pages |
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Page 20
... correctly defined by the word " sweet " would come within one approximate psycho - physical unit . There are many varieties of sweetness apart from the intensity of the sensation ; thus sugar , honey , glycerine , and sac- charin have ...
... correctly defined by the word " sweet " would come within one approximate psycho - physical unit . There are many varieties of sweetness apart from the intensity of the sensation ; thus sugar , honey , glycerine , and sac- charin have ...
Page 41
... correctly name them . As an example of this method of looking at the subject , let us represent the two - unit by the two adjacent units , blue and green . It is obvious that a normal - sighted person could distinguish different colours ...
... correctly name them . As an example of this method of looking at the subject , let us represent the two - unit by the two adjacent units , blue and green . It is obvious that a normal - sighted person could distinguish different colours ...
Page 104
... , and told the colour of the after - tint correctly in each case . He apologized for seeing the colours like this ( because his master was so incredulous ) , and said that he 104 COLOUR - BLINDNESS AND COLOUR - PERCEPTION .
... , and told the colour of the after - tint correctly in each case . He apologized for seeing the colours like this ( because his master was so incredulous ) , and said that he 104 COLOUR - BLINDNESS AND COLOUR - PERCEPTION .
Page 111
... correctly . It is necessary to commence the examination in this way for two reasons ; the first , is that it gives us at once a very fair idea of the colour - perception of the individual ; the second , is that it prevents the colour ...
... correctly . It is necessary to commence the examination in this way for two reasons ; the first , is that it gives us at once a very fair idea of the colour - perception of the individual ; the second , is that it prevents the colour ...
Page 112
... correctly ) in both the solar and gas spectra , when I examined him commencing with the red . Subsequently I examined him again , commencing in the above way , when he remarked that the field was all yellow , showing at once that he ...
... correctly ) in both the solar and gas spectra , when I examined him commencing with the red . Subsequently I examined him again , commencing in the above way , when he remarked that the field was all yellow , showing at once that he ...
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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