Colour-blindness and Colour-perceptionK. Paul, Trench, Trübner & Company, Limited, 1891 - 311 pages |
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Page 11
... Gaslight is a good example of yellow light of the above composition . It is rare to find a yellow body which reflects only the yellow rays of the spectrum . Most yellow bodies reflect the orange rays and some of the red and green . We ...
... Gaslight is a good example of yellow light of the above composition . It is rare to find a yellow body which reflects only the yellow rays of the spectrum . Most yellow bodies reflect the orange rays and some of the red and green . We ...
Page 109
... gaslight upon colours ? 4. Does distance make any difference in the appear- ance of colours ? 5. Are you fond of colours ? What is your favourite colour ? 6. Does the ordinary classification of colours appear to you correct ? 7. Give ...
... gaslight upon colours ? 4. Does distance make any difference in the appear- ance of colours ? 5. Are you fond of colours ? What is your favourite colour ? 6. Does the ordinary classification of colours appear to you correct ? 7. Give ...
Page 116
... gaslight as well as by daylight . This method of examination gives us definite facts which are useful in classifying the colour - blind . Many physicists say that these facts are useless because the colours are not pure , but , if two ...
... gaslight as well as by daylight . This method of examination gives us definite facts which are useful in classifying the colour - blind . Many physicists say that these facts are useless because the colours are not pure , but , if two ...
Page 119
... gaslight . Many authors state that colour - blind persons can distinguish red from green by gaslight . Fig . 22a shows that this is not the case . E. Examination with Colours at a Distance . - The examinee should be examined in order to ...
... gaslight . Many authors state that colour - blind persons can distinguish red from green by gaslight . Fig . 22a shows that this is not the case . E. Examination with Colours at a Distance . - The examinee should be examined in order to ...
Page 123
... gaslight , the most marked change being from bright green to purple . The series of colours , I have selected and arranged so as to confuse the colour - blind and force them to be guided by their colour - perception , whilst the ...
... gaslight , the most marked change being from bright green to purple . The series of colours , I have selected and arranged so as to confuse the colour - blind and force them to be guided by their colour - perception , whilst the ...
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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