Sight: An Exposition of the Principles of Monocular and Binocular VisionKegan Paul, 1881 - 307 páginas |
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Página 83
... nose , brows , etc. There is a certain limit hori- zontally outward where vision ceases , but it is impos- sible to detect any line of demarkation between the visible and the invisible . 3. Erect Vision . - Retinal images are all ...
... nose , brows , etc. There is a certain limit hori- zontally outward where vision ceases , but it is impos- sible to detect any line of demarkation between the visible and the invisible . 3. Erect Vision . - Retinal images are all ...
Página 92
... nose n n on the left , the brows br above , and the cheek ch below . The field of the left eye , L , is bounded similarly on the right by the nose n'n ' , the brow br ' , and the cheek ch ' . Between the lines of the nose , n n , n ' n ...
... nose n n on the left , the brows br above , and the cheek ch below . The field of the left eye , L , is bounded similarly on the right by the nose n'n ' , the brow br ' , and the cheek ch ' . Between the lines of the nose , n n , n ' n ...
Página 94
... nose , and dividing the head into two symmetrical halves ) , and separated by a considerable distance - say one 8 inches and the other 18 to 20 inches from the eyes . Now , if we look at the farther finger , it will be of course seen ...
... nose , and dividing the head into two symmetrical halves ) , and separated by a considerable distance - say one 8 inches and the other 18 to 20 inches from the eyes . Now , if we look at the farther finger , it will be of course seen ...
Página 107
... nose . Divergence of the eyes may be produced by pressing the fingers in their external cor- ners . In this case also the motion of the images is evident . Evidently , then , by voluntary motion of the eyeballs in opposite directions ...
... nose . Divergence of the eyes may be produced by pressing the fingers in their external cor- ners . In this case also the motion of the images is evident . Evidently , then , by voluntary motion of the eyeballs in opposite directions ...
Página 110
... nose ; PP , plane of objects ; and pp , plane of sight . ward the object A. The retinal images of these , falling on the central spots c c , are superposed at the point of sight ( where the lines of sight intersect ) and seen as a'b ...
... nose ; PP , plane of objects ; and pp , plane of sight . ward the object A. The retinal images of these , falling on the central spots c c , are superposed at the point of sight ( where the lines of sight intersect ) and seen as a'b ...
Otras ediciones - Ver todas
Términos y frases comunes
angle bacillary layer binocular eye binocular perspective binocular vision camera central spot Cheaper Edition ciliary muscle Cloth colors combined images cones corresponding points cross Demy 8vo depth of space distant objects distinct double images evident exactly Experiment external images farther Fcap fibers field of view focal adjustment foreground forms of perspective Frontispiece heteronymously horizontal horopter identical points Illustrations impression inches inclination interocular space jects judgments Large post 8vo left eye lens light line of sight look median plane monocular motion muscles naked eyes nearer nose object or scene observer ocular optic axes optic chiasm optic convergence optic nerve outward parallel perception of depth perfectly Poems point of sight position projection represent retina retinal images right and left right eye rotation screen Second Edition seen single side Small crown 8vo stereoscope stereoscopic pictures Third Edition tion torsion turn the eyes visual lines visual result vols
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