Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1881 - 275 páginas |
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Página 20
... brought into action . But we can not voluntarily bring into action the two exterior recti to turn the eyes outward , nor the superior rectus of one eye and the inferior rectus of the other , so as to turn the one eye upward and the ...
... brought into action . But we can not voluntarily bring into action the two exterior recti to turn the eyes outward , nor the superior rectus of one eye and the inferior rectus of the other , so as to turn the one eye upward and the ...
Página 28
... brought to the same point , a ' , and from c to the point c ' , and so also for every intermediate point . Thus an image is formed which is both bright and very distinct if the receiving screen is suitably placed , i . e . , at the ...
... brought to the same point , a ' , and from c to the point c ' , and so also for every intermediate point . Thus an image is formed which is both bright and very distinct if the receiving screen is suitably placed , i . e . , at the ...
Página 29
... brought to a focus on the retinal screen at a ' b ' . Now , since the rays from every intermediate point of the object will be similarly focused , we will have a perfect image of the object painted on the retina . This fundamental fact ...
... brought to a focus on the retinal screen at a ' b ' . Now , since the rays from every intermediate point of the object will be similarly focused , we will have a perfect image of the object painted on the retina . This fundamental fact ...
Página 30
... brought out by a comparison with some optical instrument . We select for this purpose the photographic camera . The eye and the camera : the one a masterpiece of Nature's , the other of human årt . We pass over , with bare mention ...
... brought out by a comparison with some optical instrument . We select for this purpose the photographic camera . The eye and the camera : the one a masterpiece of Nature's , the other of human årt . We pass over , with bare mention ...
Página 35
... brought to a focus at a " , while the central rays , a r , a r , are brought to a focus at a ' . The best place for the receiving screen would be at S S , between these ; but even there the image would not be sharp . In such a lens ...
... brought to a focus at a " , while the central rays , a r , a r , are brought to a focus at a ' . The best place for the receiving screen would be at S S , between these ; but even there the image would not be sharp . In such a lens ...
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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