Colour-blindness and Colour-perceptionK. Paul, Trench, Trübner & Company, Limited, 1891 - 311 pages |
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... blind persons and of all the recorded cases to which I could obtain access . I should be glad to hear from any colour- blind person concerning his views on colour , and the difficulties which he has encountered . I have obtained much ...
... blind persons and of all the recorded cases to which I could obtain access . I should be glad to hear from any colour- blind person concerning his views on colour , and the difficulties which he has encountered . I have obtained much ...
Page 2
... blind , his observations being based on the exami- nation of twelve cases . His method of examination con- sisted in letting the colour - blind classify about three hundred pieces of coloured paper . He also used pieces of coloured ...
... blind , his observations being based on the exami- nation of twelve cases . His method of examination con- sisted in letting the colour - blind classify about three hundred pieces of coloured paper . He also used pieces of coloured ...
Page 41
... blind , colour as a quality of objects is much less than it is to the normal - sighted , and in direct proportion to the degree of colour - blindness . For this reason the colour - blind rarely make remarks about colour , and generally ...
... blind , colour as a quality of objects is much less than it is to the normal - sighted , and in direct proportion to the degree of colour - blindness . For this reason the colour - blind rarely make remarks about colour , and generally ...
Page 89
... blind into the following classes : - A. Total colour - blindness , in which only one set of fibres is present in the retina , and so the individual can only perceive colours as varying degrees of light and shade . B. Partial colour ...
... blind into the following classes : - A. Total colour - blindness , in which only one set of fibres is present in the retina , and so the individual can only perceive colours as varying degrees of light and shade . B. Partial colour ...
Page 90
... blind- ness , in which the red set of fibres is supposed to be absent . Then all colour sensations will be made up ... blind who had been diagnosed as being red - blind , would match a bright saturated red with a dark green . They would ...
... blind- ness , in which the red set of fibres is supposed to be absent . Then all colour sensations will be made up ... blind who had been diagnosed as being red - blind , would match a bright saturated red with a dark green . They would ...
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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