Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1881 - 275 páginas |
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Página 52
... horizontal and a vertical plane will be equal . This is necessary to bring all rays to a perfect point at the same distance . But eyes are found in which the horizontal curvature of the cornea or of the crys- talline , or both , is ...
... horizontal and a vertical plane will be equal . This is necessary to bring all rays to a perfect point at the same distance . But eyes are found in which the horizontal curvature of the cornea or of the crys- talline , or both , is ...
Página 88
... horizontally . Now the rays from the light ( L , Fig . 27 ) which penetrate the center of the pupil will pass directly on without refrac- tion except what is normal , and make its image ( Fig . FIG . 28 . L 28 , L ' ) on the central ...
... horizontally . Now the rays from the light ( L , Fig . 27 ) which penetrate the center of the pupil will pass directly on without refrac- tion except what is normal , and make its image ( Fig . FIG . 28 . L 28 , L ' ) on the central ...
Página 92
... horizontal direction the field of view of both eyes is more than 180 ° . Now , there being two retinæ , there are of course two retinal images of every external object ; and since retinal images are projected outward into space as ex ...
... horizontal direction the field of view of both eyes is more than 180 ° . Now , there being two retinæ , there are of course two retinal images of every external object ; and since retinal images are projected outward into space as ex ...
Página 99
... horizontal cir- cle passing through the point of sight and the centers of the eyes , O O ' , are usually supposed to be seen single . This is nearly true , except when the point of sight is very near . This circle has been called the ...
... horizontal cir- cle passing through the point of sight and the centers of the eyes , O O ' , are usually supposed to be seen single . This is nearly true , except when the point of sight is very near . This circle has been called the ...
Página 123
... horizontal plane of sight , so that the back and the upper edge are visible . If we shut the left eye , we see the back , the upper edge , and the whole right side , thus— 1. The retinal image formed in the right eye is exactly like ...
... horizontal plane of sight , so that the back and the upper edge are visible . If we shut the left eye , we see the back , the upper edge , and the whole right side , thus— 1. The retinal image formed in the right eye is exactly like ...
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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 cones corresponding points cross depth of space distant objects distinct double images evident exactly Experiment external images eyes by squinting farther fibers field of view figures finger focal adjustment foreground forms of perspective gaze heteronymously homonymously horizontal horopter identical points impression inches inclination interocular space inverted jects left eye lens less convergence light line of sight look median plane monocular images motion muscles naked eyes nearer nose object or scene oblique observer ocular optic axes optic chiasm optic convergence optic nerve outward parallel perceived perception of depth perfect image perfectly point of sight position projection rays refractive represent retina retinal images right and left right eye rotation sclerotic screen seen single side stereoscope stereoscopic pictures surface tion torsion turn the eyes unite visual lines visual result