Colour-blindness and Colour-perceptionK. Paul, Trench, Trübner & Company, Limited, 1891 - 311 pages |
From inside the book
Results 1-5 of 28
Page 104
... painted very well . It is perfectly certain that individuals belonging to this class see more in colour than the normal - sighted . They can match colours with greater ease , and have a better memory for varieties of colour . They can ...
... painted very well . It is perfectly certain that individuals belonging to this class see more in colour than the normal - sighted . They can match colours with greater ease , and have a better memory for varieties of colour . They can ...
Page 105
... painted with various mixtures of colours in order to test the seven - unit , with the same result . It is obvious that practically this class is of little importance , as they are able to recognize all the differences in colour which ...
... painted with various mixtures of colours in order to test the seven - unit , with the same result . It is obvious that practically this class is of little importance , as they are able to recognize all the differences in colour which ...
Page 107
... painted in his later years are too blue , and in order to be seen to the best advantage they have to be looked at through a yellow glass . The cause of this defect was the yellow tint which the crystalline lenses acquire with age . The ...
... painted in his later years are too blue , and in order to be seen to the best advantage they have to be looked at through a yellow glass . The cause of this defect was the yellow tint which the crystalline lenses acquire with age . The ...
Page 117
... paint the whole of one colour before proceeding with the next . As the colour - blind only see perfectly definite colours at the centre - points of their approximate units , they will , when representing a colour , ESTIMATION OF DEFECTS ...
... paint the whole of one colour before proceeding with the next . As the colour - blind only see perfectly definite colours at the centre - points of their approximate units , they will , when representing a colour , ESTIMATION OF DEFECTS ...
Page 118
... painted by colour - blind persons . Fig . 16a represents Fig . 16 as painted by a four - unit colour - blind person . He has represented blue by green , red by crimson , and pink by yellow . Figs . 18a and 19a represent Figs . 18 and 19 ...
... painted by colour - blind persons . Fig . 16a represents Fig . 16 as painted by a four - unit colour - blind person . He has represented blue by green , red by crimson , and pink by yellow . Figs . 18a and 19a represent Figs . 18 and 19 ...
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