Sight: An Exposition of the Principles of Monocular and Binocular VisionKegan Paul, 1881 - 307 páginas |
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Resultados 6-10 de 46
Página 33
... necessary that the convexity should predominate over the concavity , as in Fig . 11 , B. Again , it must be remembered that dispersion is not always in proportion to refraction . Some substances B have a higher refractive power and a ...
... necessary that the convexity should predominate over the concavity , as in Fig . 11 , B. Again , it must be remembered that dispersion is not always in proportion to refraction . Some substances B have a higher refractive power and a ...
Página 41
... necessary to find that place , and fix the receiving plate immovably there . But the place of the image formed by any lens changes with every change in the distance of the object . As the object in front approaches , the image on the ...
... necessary to find that place , and fix the receiving plate immovably there . But the place of the image formed by any lens changes with every change in the distance of the object . As the object in front approaches , the image on the ...
Página 47
... necessary to throw the image on the retina , which effort is greater as the object is nearer , until it is limited at the distance of about five inches . The normal eye , therefore , is like a camera , which , when pushed up as much as ...
... necessary to throw the image on the retina , which effort is greater as the object is nearer , until it is limited at the distance of about five inches . The normal eye , therefore , is like a camera , which , when pushed up as much as ...
Página 51
... necessary to wear convex glasses , even for distant objects . But this is not ordinary presbyopy . In fact , it is probable that most of such cases belong to the next category . Hypermetropy . - We have dwelt on the two most common ...
... necessary to wear convex glasses , even for distant objects . But this is not ordinary presbyopy . In fact , it is probable that most of such cases belong to the next category . Hypermetropy . - We have dwelt on the two most common ...
Página 52
... necessary to bring all rays to a perfect point at the same distance . But eyes are found in which the horizontal curvature of the cornea or of the crys- talline , or both , is different from the vertical curvature . Such eyes are said ...
... necessary to bring all rays to a perfect point at the same distance . But eyes are found in which the horizontal curvature of the cornea or of the crys- talline , or both , is different from the vertical curvature . Such eyes are said ...
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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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