Colour-blindness and Colour-perceptionK. Paul, Trench, Trübner & Company, Limited, 1891 - 311 pages |
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Page 1
... out , 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.
... out , 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 7
... able to convert the infra- red into rays of a higher degree of refrangibility . If the spectrum be looked at through a piece of cobalt glass , a bright crimson band will be seen below the red , whilst the presence of rays above the ...
... able to convert the infra- red into rays of a higher degree of refrangibility . If the spectrum be looked at through a piece of cobalt glass , a bright crimson band will be seen below the red , whilst the presence of rays above the ...
Page 10
... able to say which is the red and which the violet side of the spectrum . By this means we obtain the purest possible colour . As has been previously explained , the band is really made up of numerous waves of light which differ from ...
... able to say which is the red and which the violet side of the spectrum . By this means we obtain the purest possible colour . As has been previously explained , the band is really made up of numerous waves of light which differ from ...
Page 12
... able to per- form the most abstruse calculations , whilst another man is hardly able to master the multiplication table , it is evident that there is a difference between the two , which may be admirably expressed by saying that the ...
... able to per- form the most abstruse calculations , whilst another man is hardly able to master the multiplication table , it is evident that there is a difference between the two , which may be admirably expressed by saying that the ...
Page 15
... able to make definite classes , varying from those who are able to perceive very minute differences of size to those who can only distinguish ( by the eye ) large and small objects , and are therefore size - blind . It will be noticed ...
... able to make definite classes , varying from those who are able to perceive very minute differences of size to those who can only distinguish ( by the eye ) large and small objects , and are therefore size - blind . It will be noticed ...
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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