Sight: An Exposition of the Principles of Monocular and Binocular VisionKegan Paul, 1881 - 275 páginas |
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Página 17
... inch in diameter . The socket in which it is set is not a hollow sphere , but an irregular hollow cone or pyramid . Evidently , therefore , the deeper and smaller parts of the hollow must be filled with something else . It is filled ...
... inch in diameter . The socket in which it is set is not a hollow sphere , but an irregular hollow cone or pyramid . Evidently , therefore , the deeper and smaller parts of the hollow must be filled with something else . It is filled ...
Página 23
... inch in diameter , and one sixth of an inch in thickness , firm enough to handle easily , but elastic and easily yielding to pressure . On section it is found to consist of layers , increasing in density from surface to center , as ...
... inch in diameter , and one sixth of an inch in thickness , firm enough to handle easily , but elastic and easily yielding to pressure . On section it is found to consist of layers , increasing in density from surface to center , as ...
Página 27
... inches in diameter ; cover the hole with an opaque plate of sheet iron , in which there is a very small hole , one tenth to one twentieth of an inch in diameter . If , now , a sheet of white paper be held a little way from the small ...
... inches in diameter ; cover the hole with an opaque plate of sheet iron , in which there is a very small hole , one tenth to one twentieth of an inch in diameter . If , now , a sheet of white paper be held a little way from the small ...
Página 39
... inch wide . When they contract , they draw up the pupil , like a string about the mouth of a bag , and make it small ( Fig . 15 , A ) . We may regard the radiating fibers as elastic , and as contracting passively by elasticity when ...
... inch wide . When they contract , they draw up the pupil , like a string about the mouth of a bag , and make it small ( Fig . 15 , A ) . We may regard the radiating fibers as elastic , and as contracting passively by elasticity when ...
Página 44
... finitely distant objects . By change of the form of the lens , it can adjust itself to all distances up to about five * " Optique Physiologique , ” p . 150 . inches . The range of adjustment or of distinct vision 44 MONOCULAR VISION .
... finitely distant objects . By change of the form of the lens , it can adjust itself to all distances up to about five * " Optique Physiologique , ” p . 150 . inches . The range of adjustment or of distinct vision 44 MONOCULAR VISION .
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Términos y frases comunes
angle axis 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 diagram direction distance distant objects distinct divergence double images evident Experiment external images farther Fcap fibers field of view Frontispiece Helmholtz heteronymous horizontal horopter horopteric line Illustrations impression inches inclination interocular space jects Large post 8vo left eye left-eye image lens light line of sight look median line monocular motion muscles nearer nose observer ocular optic axes optic centers optic chiasm optic nerve outward parallel perception perfectly phenomena plane Poems point of sight Portrait position price 75 Prof projection rays refractive represent retina retinal images right eye rotation sclerotic screen Second Edition seen single Small crown 8vo stereoscope surface T. H. HUXLEY Third Edition tion torsion Translated vertical meridian vibrations visual lines visual result vols
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