Colour-blindness and Colour-perceptionK. Paul, Trench, Trübner & Company, Limited, 1891 - 311 pages |
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Page 4
... marked out 576 of these lines , and named the principal of them after the letters of the alphabet . Light , according to Huyghens and Young , is due to the undulations of a medium called the luminiferous 4 COLOUR - BLINDNESS AND COLOUR ...
... marked out 576 of these lines , and named the principal of them after the letters of the alphabet . Light , according to Huyghens and Young , is due to the undulations of a medium called the luminiferous 4 COLOUR - BLINDNESS AND COLOUR ...
Page 22
... upon the sense organ towards the termination of the series . Thus in the case of sounds , a very high note , which was only just perceived , would not form such a marked contrast 22 COLOUR - BLINDNESS AND COLOUR - PERCEPTION . .
... upon the sense organ towards the termination of the series . Thus in the case of sounds , a very high note , which was only just perceived , would not form such a marked contrast 22 COLOUR - BLINDNESS AND COLOUR - PERCEPTION . .
Page 23
... marked contrast when compared , are the two at the ends of the series . It is evident that if the difference between the discs be slight , these are the only two which will be distinguished with certainty . The next disc pre- senting a ...
... marked contrast when compared , are the two at the ends of the series . It is evident that if the difference between the discs be slight , these are the only two which will be distinguished with certainty . The next disc pre- senting a ...
Page 38
... marked difference in intensity , it is probable that the most intense portion would be selected . Having shown how the psycho - physical colour series appears with three approximate psycho - physical colour units , we must consider ...
... marked difference in intensity , it is probable that the most intense portion would be selected . Having shown how the psycho - physical colour series appears with three approximate psycho - physical colour units , we must consider ...
Page 56
... marked out in Fig . 2. If a spectrum be looked at as a whole , it appears as if one colour gradually passed into another , in such a way as to make it difficult to mark out the exact junction of the units . However , when shutters are ...
... marked out in Fig . 2. If a spectrum be looked at as a whole , it appears as if one colour gradually passed into another , in such a way as to make it difficult to mark out the exact junction of the units . However , when shutters are ...
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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