Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1897 - 318 páginas |
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Página 94
... chemical change in a peculiar substance or peculiar sub- stances , which we may call color - substances in the cones . As the iodized plate , so these color - substances in the retina are differently affected by light of dif- ferent ...
... chemical change in a peculiar substance or peculiar sub- stances , which we may call color - substances in the cones . As the iodized plate , so these color - substances in the retina are differently affected by light of dif- ferent ...
Página 97
... substance is differentiated at first into two color - sub- stances , yellow and blue , and finally into three color- substances , red , green , and blue , some of the yellow sub- stance having been secondarily differentiated into red and ...
... substance is differentiated at first into two color - sub- stances , yellow and blue , and finally into three color- substances , red , green , and blue , some of the yellow sub- stance having been secondarily differentiated into red and ...
Página 98
... substances , as is probable in the cones . Similarly the perception of yellow may be due either to photo - chemical change of some undiffer- entiated yellow substance , or else to the decomposi- tion of the red and green color - substances ...
... substances , as is probable in the cones . Similarly the perception of yellow may be due either to photo - chemical change of some undiffer- entiated yellow substance , or else to the decomposi- tion of the red and green color - substances ...
Página 99
... color - blind . A comparison , again , of the eye and ear in this re- gard is instructive . The limits of perception of sound- vibrations are very wide , viz ... elements or retinal color - substances is wanting . COLOR PERCEPTION . 99.
... color - blind . A comparison , again , of the eye and ear in this re- gard is instructive . The limits of perception of sound- vibrations are very wide , viz ... elements or retinal color - substances is wanting . COLOR PERCEPTION . 99.
Página 100
... color - substances is wanting . Let us try the several theories by this test . 1. Helmholtz's Theory . - Perhaps the most commonly wanting of all colors is red . According to this theory the defect in these cases consists in the absence of ...
... color - substances is wanting . Let us try the several theories by this test . 1. Helmholtz's Theory . - Perhaps the most commonly wanting of all colors is red . According to this theory the defect in these cases consists in the absence of ...
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Términos y frases comunes
adjustment angle axis bacillary layer becomes binocular eye binocular perspective binocular vision blind spot camera central spot ciliary muscle circle colors combined image concave corresponding points cross defect depth of space distance distant objects distinct divergence double images evident exactly Experiment explained external images farther fibers field of view focal fore fovea Helmholtz heteronymous homonymous horizontal horopter horopteric line Illustrations impression inches inclined interocular space left eye left-eye image lens light line of sight look median plane middle monocular motion muscles nearer normal eye nose oblique observer ocular optic axes optic chiasm optic nerve optic vesicle outward parallel perceived perception perfectly phantom phenomena point of sight position primary projection pupil ray-line rays refractive represent retina retinal images right and left right eye right-eye image rotation sclerotic screen seen single sensation side stereoscope surface tion torsion turn the eyes vergence vibrations visual lines visual result