Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1897 - 318 páginas |
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Página xvi
... necessary for the complex relations of the higher ani- mals , sensory nerve - fibers are differentiated into several kinds , so that each may give clear knowledge of a dif- ferent property . Thus , for example , the first 1 INTRODUCTORY ...
... necessary for the complex relations of the higher ani- mals , sensory nerve - fibers are differentiated into several kinds , so that each may give clear knowledge of a dif- ferent property . Thus , for example , the first 1 INTRODUCTORY ...
Página 5
... necessary , found only in the optic nerve . Above the number just given , ethereal vibrations are perceived as different colors , in the order seen in the spectrum , until about 800,000,000,000,000 is reached . * Beyond this we have no ...
... necessary , found only in the optic nerve . Above the number just given , ethereal vibrations are perceived as different colors , in the order seen in the spectrum , until about 800,000,000,000,000 is reached . * Beyond this we have no ...
Página 12
... another , and are able to turn them in different directions ; and to a limited extent the same may be done by man when necessary to accom- plish single vision . The Eyeball . — We have thus far spoken only 12 MONOCULAR VISION .
... another , and are able to turn them in different directions ; and to a limited extent the same may be done by man when necessary to accom- plish single vision . The Eyeball . — We have thus far spoken only 12 MONOCULAR VISION .
Página 16
... necessary for distinct vision ; cataract , a common cause of blindness , arises from its opacity . The lens , with its continuing curtain , completely divides the interior of the ball into two compartments , an anterior and a posterior ...
... necessary for distinct vision ; cataract , a common cause of blindness , arises from its opacity . The lens , with its continuing curtain , completely divides the interior of the ball into two compartments , an anterior and a posterior ...
Página 18
... necessary that rays from different points in the object , even the most contiguous , should not mix on the image , but all the rays from each point on the object must be carried to its own point on the image . Now , it is impossible ...
... necessary that rays from different points in the object , even the most contiguous , should not mix on the image , but all the rays from each point on the object must be carried to its own point on the image . Now , it is impossible ...
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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