Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1897 - 318 páginas |
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Página 12
... brought into action . But we can not volun- tarily 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 volun- tarily 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 21
... brought to the same point , a ' , and from e 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 FIG . 7 . a b a S S placed - i ...
... brought to the same point , a ' , and from e 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 FIG . 7 . a b a S S placed - i ...
Página 22
... 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 fo- cused , we will have a perfect image of the object painted on the retina . In the same figure r'r ...
... 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 fo- cused , we will have a perfect image of the object painted on the retina . In the same figure r'r ...
Página 24
... 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 man's work . 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 man's work . We pass over , with bare mention ...
Página 29
... 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 SS , between these ; but even there the image would not be sharp . In such a lens there ...
... 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 SS , between these ; but even there the image would not be sharp . In such a lens there ...
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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