Sight: An Exposition of the Principles of Monocular and Binocular VisionKegan Paul, 1881 - 307 páginas |
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Página 27
... Experiment . - Let a room with solid shutters be dark- ened ; let one shutter have a hole of a few inches in ... experiments may be made illustrating this principle . A pinhole in a card will make an inverted image of a candle flame ...
... Experiment . - Let a room with solid shutters be dark- ened ; let one shutter have a hole of a few inches in ... experiments may be made illustrating this principle . A pinhole in a card will make an inverted image of a candle flame ...
Página 42
... Experiment . This is proved in the following man- ner : A person is chosen with good , normal young eyes . The experimenter stands in a dark room , in front of FIG . 17 . B n A , eye observed ; B , eye of observer ; c , section of ...
... Experiment . This is proved in the following man- ner : A person is chosen with good , normal young eyes . The experimenter stands in a dark room , in front of FIG . 17 . B n A , eye observed ; B , eye of observer ; c , section of ...
Página 66
... Experiment 1. — If the retina or the optic nerve in any portion of its course were irritated in any way , by pinching , by scratching , or by electricity , we should certainly not feel any pain at all , but see a flash of light . But ...
... Experiment 1. — If the retina or the optic nerve in any portion of its course were irritated in any way , by pinching , by scratching , or by electricity , we should certainly not feel any pain at all , but see a flash of light . But ...
Página 67
... experiment can not be easily made . It has been made , however , by passing a spark of electricity through the head or through the eye in such wise as to penetrate the retina or traverse the optic nerve . The phenom- enon has also been ...
... experiment can not be easily made . It has been made , however , by passing a spark of electricity through the head or through the eye in such wise as to penetrate the retina or traverse the optic nerve . The phenom- enon has also been ...
Página 68
... Experiment 4. Purkinje's Figures . - Stand in a dark room with a lighted candle in hand . Shutting the left , hold the candle very near the right eye , within three or four inches , obliquely outward and forward , so that the light ...
... Experiment 4. Purkinje's Figures . - Stand in a dark room with a lighted candle in hand . Shutting the left , hold the candle very near the right eye , within three or four inches , obliquely outward and forward , so that the light ...
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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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