Colour-blindness and Colour-perceptionK. Paul, Trench, Trübner & Company, Limited, 1891 - 311 pages |
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Page 9
... similar manner . When the crests of the light waves correspond , both are reinforced , and the light becomes brighter . When the crest of one light wave corresponds to the trough of another of similar wave- length , both are annihilated ...
... similar manner . When the crests of the light waves correspond , both are reinforced , and the light becomes brighter . When the crest of one light wave corresponds to the trough of another of similar wave- length , both are annihilated ...
Page 10
... similar appearance to the normal - sighted may have a very different composition , as far as the physical structure of the colour is concerned . When I speak of the physical structure of a colour , I mean the composition of the light ...
... similar appearance to the normal - sighted may have a very different composition , as far as the physical structure of the colour is concerned . When I speak of the physical structure of a colour , I mean the composition of the light ...
Page 14
... similar to those experienced by themselves . In the perception of a sensation there are the following factors to be taken into consideration : — 1. The physical stimulus . 2. The sense - organ receiving this stimulus . 3. The nerves ...
... similar to those experienced by themselves . In the perception of a sensation there are the following factors to be taken into consideration : — 1. The physical stimulus . 2. The sense - organ receiving this stimulus . 3. The nerves ...
Page 17
... similar sounds that there are not two alike , simply considering the vibrations per second . For instance , supposing we take one hundred sounds all apparently produced by bodies vibrating 75 times to the second , as ascertained by the ...
... similar sounds that there are not two alike , simply considering the vibrations per second . For instance , supposing we take one hundred sounds all apparently produced by bodies vibrating 75 times to the second , as ascertained by the ...
Page 18
... similar number of the hypo- thetical physical units , they will be adequate for purposes of comparison . If we take one tenth of a second as re- presenting an approximate physical time unit , it is evident that we could make a series of ...
... similar number of the hypo- thetical physical units , they will be adequate for purposes of comparison . If we take one tenth of a second as re- presenting an approximate physical time unit , it is evident that we could make a series of ...
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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