Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1897 - 318 páginas |
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Página 59
... referred to its periph- eral extremity . Thus , if the sciatic nerve be laid bare in the upper thigh and then pinched , the pain is felt not at the part injured but at the termination of the nerve in the feet and toes . If the ulnar ...
... referred to its periph- eral extremity . Thus , if the sciatic nerve be laid bare in the upper thigh and then pinched , the pain is felt not at the part injured but at the termination of the nerve in the feet and toes . If the ulnar ...
Página 60
... referred to the place where the diseased fibers were originally distributed . In nerves of com- mon sensation , therefore , injury or disease , or stimu- lation of any kind in any part , is referred to the peripheral extremity of the ...
... referred to the place where the diseased fibers were originally distributed . In nerves of com- mon sensation , therefore , injury or disease , or stimu- lation of any kind in any part , is referred to the peripheral extremity of the ...
Página 61
... on the retina is always referred directly outward at a right angle to the point impressed , and therefore to the opposite side of the field of view . These colored spectra have been called phosphenes . Observe , 6 SPACE PERCEPTION . 61.
... on the retina is always referred directly outward at a right angle to the point impressed , and therefore to the opposite side of the field of view . These colored spectra have been called phosphenes . Observe , 6 SPACE PERCEPTION . 61.
Página 68
... referred back along the ray - line , or nearly so , * to the place whence it came . A mere inspection of the figure is sufficient to show that the position of all retinal images must be the * These two expressions , " end on " and ...
... referred back along the ray - line , or nearly so , * to the place whence it came . A mere inspection of the figure is sufficient to show that the position of all retinal images must be the * These two expressions , " end on " and ...
Página 70
... referred back along the ray - line ( central ray of the pencil ) into space , and therefore to its proper place . For example : The rays from a star ( which is a mere radiant point ) on the extreme verge of the field of view to the ...
... referred back along the ray - line ( central ray of the pencil ) into space , and therefore to its proper place . For example : The rays from a star ( which is a mere radiant point ) on the extreme verge of the field of view to the ...
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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