Sight: An Exposition of the Principles of Monocular and Binocular VisionKegan Paul, 1881 - 307 páginas |
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Página 5
... light , 37 ; adjustment for distance , 40 ; accom- modation of the eye , 42 ; experiment illustrating , 42 ; theory of adjustment , 44 ; Helmholtz's view , 44 . 17 30 CHAPTER III . DEFECTS OF THE EYE AS AN INSTRUMENT.
... light , 37 ; adjustment for distance , 40 ; accom- modation of the eye , 42 ; experiment illustrating , 42 ; theory of adjustment , 44 ; Helmholtz's view , 44 . 17 30 CHAPTER III . DEFECTS OF THE EYE AS AN INSTRUMENT.
Página 10
... light , and nothing else . If , therefore , these nerves be mechanically irritated , we do not feel anything , but see a flash of light . In a similar manner , the eighth pair — auditive nerve — is specially organized to respond to ...
... light , and nothing else . If , therefore , these nerves be mechanically irritated , we do not feel anything , but see a flash of light . In a similar manner , the eighth pair — auditive nerve — is specially organized to respond to ...
Página 13
... light . The vibrations which produce this sensation are so rapid - 399,000,000,000,000 in a sec- ond — that they can be conveyed only by the ethereal medium . For the perception of these vibrations , a pe- culiar and wonderful ...
... light . The vibrations which produce this sensation are so rapid - 399,000,000,000,000 in a sec- ond — that they can be conveyed only by the ethereal medium . For the perception of these vibrations , a pe- culiar and wonderful ...
Página 14
... light but objects . The lowest animals in which an optic nerve is found perceive light , but not objects ; because , though the specialized nerve is present , the appropriate instrument is wanting . It is on these two higher senses that ...
... light but objects . The lowest animals in which an optic nerve is found perceive light , but not objects ; because , though the specialized nerve is present , the appropriate instrument is wanting . It is on these two higher senses that ...
Página 15
... light , its intensity , color , and direction . These are incapable of further analysis , and are therefore simple sensations . Outline form may possibly be added , though this may be analyzed into a combination of directions . But ...
... light , its intensity , color , and direction . These are incapable of further analysis , and are therefore simple sensations . Outline form may possibly be added , though this may be analyzed into a combination of directions . But ...
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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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