Colour-blindness and Colour-perceptionK. Paul, Trench, Trübner & Company, Limited, 1891 - 311 pages |
From inside the book
Results 1-5 of 60
Page 7
... bright crimson band will be seen below the red , whilst the presence of rays above the violet is demonstrated by fluorescence and other phenomena . The most important point concerning the physical basis of colour is , that the rays of ...
... bright crimson band will be seen below the red , whilst the presence of rays above the violet is demonstrated by fluorescence and other phenomena . The most important point concerning the physical basis of colour is , that the rays of ...
Page 41
... bright green , orange ; the brightest possible green , yellow ; a bright but not quite so pure green , yellow - green ; a duller and not so pure green , pure green ; a mixture of the two colours , blue - green ; a blue , with a trace of ...
... bright green , orange ; the brightest possible green , yellow ; a bright but not quite so pure green , yellow - green ; a duller and not so pure green , pure green ; a mixture of the two colours , blue - green ; a blue , with a trace of ...
Page 51
... bright light of any kind whatever falls upon a portion of the retina , light of the same kind appears diffused as a weak luminosity over a great portion of the field of view . The phenomenon is easy to be observed . Let a candle be ...
... bright light of any kind whatever falls upon a portion of the retina , light of the same kind appears diffused as a weak luminosity over a great portion of the field of view . The phenomenon is easy to be observed . Let a candle be ...
Page 53
... bright light suffices to bring about a distinct wandering of the pigment , and the more refrangible rays seem to act most powerfully , the red rays least , and the yellow rays with an intermediate strength . b . Recent observations of ...
... bright light suffices to bring about a distinct wandering of the pigment , and the more refrangible rays seem to act most powerfully , the red rays least , and the yellow rays with an intermediate strength . b . Recent observations of ...
Page 61
... bright yellow , apparently diluted with white light . We know that a large number of the rays have combined to form yellow ; for instance , the yellow - green and orange , the pure green and red . The violet and blue - green would ...
... bright yellow , apparently diluted with white light . We know that a large number of the rays have combined to form yellow ; for instance , the yellow - green and orange , the pure green and red . The violet and blue - green would ...
Other editions - View all
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