Colour-blindness and Colour-perceptionK. Paul, Trench, Trübner & Company, Limited, 1891 - 311 pages |
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Page 1
... in a very able paper , the defects in Brewster's methods of experimenting , and , except with artists , this theory has been very generally rejected . B The first definite record we possess of a case of CHAPTER HISTORICAL.
... in a very able paper , the defects in Brewster's methods of experimenting , and , except with artists , this theory has been very generally rejected . B The first definite record we possess of a case of CHAPTER HISTORICAL.
Page 2
... method of examination con- sisted in letting the colour - blind classify about three hundred pieces of coloured paper . He also used pieces of coloured glass . Szokalski , Purkinje , and Elie Wartman have also made classifications of ...
... method of examination con- sisted in letting the colour - blind classify about three hundred pieces of coloured paper . He also used pieces of coloured glass . Szokalski , Purkinje , and Elie Wartman have also made classifications of ...
Page 41
... 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 , even if only two were visible to him ...
... 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 , even if only two were visible to him ...
Page 64
... methods as mixing pigments . These methods are useless , because we do not know what is the exact composition of the ... method of arriving at the composi- tion of a compound colour is to examine the light which is transmitted through a ...
... methods as mixing pigments . These methods are useless , because we do not know what is the exact composition of the ... method of arriving at the composi- tion of a compound colour is to examine the light which is transmitted through a ...
Page 67
... spectrum . The addition of red to blue gives this colour a warm appearance , which is quite different from the cold violet of the spectrum . The other method to which I have referred , namely THE COMPOSITION AND COMBINATION OF COLOURS . 67.
... spectrum . The addition of red to blue gives this colour a warm appearance , which is quite different from the cold violet of the spectrum . The other method to which I have referred , namely THE COMPOSITION AND COMBINATION OF COLOURS . 67.
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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