Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1881 - 275 páginas |
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Página 71
... actual visible field , the outlines of which we can , at least imperfectly , mark out . It is wholly differ- ent from a simple absence of visual impression . We see a dark field in front , but nothing at all behind the head . The dark ...
... actual visible field , the outlines of which we can , at least imperfectly , mark out . It is wholly differ- ent from a simple absence of visual impression . We see a dark field in front , but nothing at all behind the head . The dark ...
Página 72
... actual objects from without are projected into the field of view and seen there as the true signs of objects , even so impressions made on the retina abnormally from within , by the mind or imagination , are also sometimes projected out ...
... actual objects from without are projected into the field of view and seen there as the true signs of objects , even so impressions made on the retina abnormally from within , by the mind or imagination , are also sometimes projected out ...
Página 98
... actual images of A and D. cide with each other . In order to distinguish these two kinds of corresponding points from each other , the lat- ter - i . e . , corresponding points on the two retina — are often , and perhaps best , called ...
... actual images of A and D. cide with each other . In order to distinguish these two kinds of corresponding points from each other , the lat- ter - i . e . , corresponding points on the two retina — are often , and perhaps best , called ...
Página 111
... actual plane of the objects , and the dotted lines pp the plane of sight or of the images . Many persons will not at first succeed in making these experiments , on account of the difficulty which most persons experience in watching ...
... actual plane of the objects , and the dotted lines pp the plane of sight or of the images . Many persons will not at first succeed in making these experiments , on account of the difficulty which most persons experience in watching ...
Página 125
... actual FIG . 44 . rod in the median line ; and therefore it will look like such a rod . As in the case of the actual rod , by greater or less convergence of the optic axes we may combine successively different parts ; and the eyes ...
... actual FIG . 44 . rod in the median line ; and therefore it will look like such a rod . As in the case of the actual rod , by greater or less convergence of the optic axes we may combine successively different parts ; and the eyes ...
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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