Sight: An Exposition of the Principles of Monocular and Binocular VisionKegan Paul, 1881 - 307 páginas |
Dentro del libro
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Página 18
... middle or equator of the globe ( Fig . 3 ) . They are called severally superior , inferior , external , and internal rectus . The first turns the ball upward , the second downward , the third to the right , and the fourth to the left ...
... middle or equator of the globe ( Fig . 3 ) . They are called severally superior , inferior , external , and internal rectus . The first turns the ball upward , the second downward , the third to the right , and the fourth to the left ...
Página 21
... . This transverse plate is not perfectly flat , but protrudes a little in the middle . In its center is a round hole , called the pupil , corresponding in position with the hole in the watch face GENERAL STRUCTURE OF THE EYE . 21.
... . This transverse plate is not perfectly flat , but protrudes a little in the middle . In its center is a round hole , called the pupil , corresponding in position with the hole in the watch face GENERAL STRUCTURE OF THE EYE . 21.
Página 37
... middle of the field of view , i . e . , nearly directly in front , are brought to a perfect focus , the rays from radiants situ- ated near the margins of the field of view , i . e . , of very oblique pencils , are not brought to a focus ...
... middle of the field of view , i . e . , nearly directly in front , are brought to a perfect focus , the rays from radiants situ- ated near the margins of the field of view , i . e . , of very oblique pencils , are not brought to a focus ...
Página 38
... middle . The circumference of the disk is immovably fixed to the sclerotic at its junction with the cornea ; but the margin of the circular hole , or pupil , is free to move . The disk itself is composed of two sets of contractile ...
... middle . The circumference of the disk is immovably fixed to the sclerotic at its junction with the cornea ; but the margin of the circular hole , or pupil , is free to move . The disk itself is composed of two sets of contractile ...
Página 39
... plan . It is com- posed of many very thin metallic plates , partly covering each other , so arranged as to leave a polygonal hole in the middle , and sliding over each other in such THE EYE AS AN OPTICAL INSTRUMENT . 39.
... plan . It is com- posed of many very thin metallic plates , partly covering each other , so arranged as to leave a polygonal hole in the middle , and sliding over each other in such THE EYE AS AN OPTICAL INSTRUMENT . 39.
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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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