Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1881 - 275 páginas |
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Página 9
... 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 differ- ent properties . Thus , for example , the first 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 differ- ent properties . Thus , for example , the first INTRODUCTORY ...
Página 13
... 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 831,000,000,000 , - 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 831,000,000,000 , - 000 is reached . Beyond this we have no ...
Página 23
... and slightly flattens it . We shall see the importance of this when we come to speak of the adjustment of the eye for distance . The perfect transparency of the lens is obviously necessary for. 2 GENERAL STRUCTURE OF THE EYE . 23.
... and slightly flattens it . We shall see the importance of this when we come to speak of the adjustment of the eye for distance . The perfect transparency of the lens is obviously necessary for. 2 GENERAL STRUCTURE OF THE EYE . 23.
Página 24
... 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 25
... 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 im- possible ...
... 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 im- possible ...
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Términos y frases comunes
angle axis bacillary layer binocular eye binocular perspective binocular vision camera central spot ciliary muscle circle colors combined images cornea corresponding points cross depth of space distance distant objects distinct divergence double images evident exactly Experiment external images farther fibers field of view gaze Helmholtz heteronymous homonymous horizontal horopter horopteric line identical points Illustrations impression inches inclination interocular space inverted jects law of corresponding left eye left-eye image lens light line of sight look median line middle monocular motion muscles naked eyes nearer nose oblique observer ocular optic axes optic centers optic chiasm optic convergence optic nerve outward parallel perceived perception perfect image perfectly point of sight position projection pupil ray-lines rays refractive represent retina retinal images right and left right eye right-eye image rotation sclerotic screen seen single shut side stereoscope surface tion torsion turn the eyes vergence vertical meridian vibrations visual lines visual result