Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1881 - 275 páginas |
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... LIGHT AND PHOTOGRAPHY . By Dr. HERMANN VOGEL . 100 Illustrations . $ 2.00 . 15. FUNGI ; their Nature , Influence , and Uses . By M. C. COOKE , LL . D. Edited by M. J. BERKELEY . 109 Illustrations . $ 1.50 . 16. THE LIFE AND GROWTH OF ...
... LIGHT AND PHOTOGRAPHY . By Dr. HERMANN VOGEL . 100 Illustrations . $ 2.00 . 15. FUNGI ; their Nature , Influence , and Uses . By M. C. COOKE , LL . D. Edited by M. J. BERKELEY . 109 Illustrations . $ 1.50 . 16. THE LIFE AND GROWTH OF ...
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... 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 ...
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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 cones corresponding points cross depth of space distant objects distinct double images evident exactly Experiment external images eyes by squinting farther fibers field of view figures finger focal adjustment foreground forms of perspective gaze heteronymously homonymously horizontal horopter identical points impression inches inclination interocular space inverted jects left eye lens less convergence light line of sight look median plane monocular images motion muscles naked eyes nearer nose object or scene oblique observer ocular optic axes optic chiasm optic convergence optic nerve outward parallel perceived perception of depth perfect image perfectly point of sight position projection rays refractive represent retina retinal images right and left right eye rotation sclerotic screen seen single side stereoscope stereoscopic pictures surface tion torsion turn the eyes unite visual lines visual result