Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1881 - 275 páginas |
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Página 25
... exactly proportioned to distinctness of retinal images . If the image of an ob- ject is distinct , the object will be distinct ; if the image is blurred , the object , both in outline and in details of surface , will be blurred . If ...
... exactly proportioned to distinctness of retinal images . If the image of an ob- ject is distinct , the object will be distinct ; if the image is blurred , the object , both in outline and in details of surface , will be blurred . If ...
Página 32
... exactly similar colors . Now all refraction is accompanied by dispersion ; therefore a simple , uncorrected lens always disperses , especially on the edges where the refraction is greatest ; and , therefore , also , the images made by ...
... exactly similar colors . Now all refraction is accompanied by dispersion ; therefore a simple , uncorrected lens always disperses , especially on the edges where the refraction is greatest ; and , therefore , also , the images made by ...
Página 40
... exactly in the right place , i . e . , in the focus ; otherwise the image will be blurred . We reproduce here ( Fig . 16 ) the diagram FIG . 16 . a Ъ L L S O α S 07 S S on page 27 , showing this . It is at once seen that , if the ...
... exactly in the right place , i . e . , in the focus ; otherwise the image will be blurred . We reproduce here ( Fig . 16 ) the diagram FIG . 16 . a Ъ L L S O α S 07 S S on page 27 , showing this . It is at once seen that , if the ...
Página 75
... exactly where the field of view ends , except where it is limited by some portion of the face . Now what is the use of this arrangement ? Why would it not be much better to see equally distinctly over all portions of the field of view ...
... exactly where the field of view ends , except where it is limited by some portion of the face . Now what is the use of this arrangement ? Why would it not be much better to see equally distinctly over all portions of the field of view ...
Página 108
... 10 inches apart , and then the eyes be converged until the right eye looks exactly toward the left hand and the left eye toward the right forefinger , then evidently the retinal images of these two objects will 108 BINOCULAR VISION .
... 10 inches apart , and then the eyes be converged until the right eye looks exactly toward the left hand and the left eye toward the right forefinger , then evidently the retinal images of these two objects will 108 BINOCULAR VISION .
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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 cornea corresponding points cross depth of space distance distant objects distinct divergence double images evident exactly Experiment external images farther fibers field of view gaze Helmholtz heteronymous homonymous horizontal horopter horopteric line identical points Illustrations impression inches inclination interocular space inverted jects law of corresponding left eye left-eye image lens light line of sight look median line middle monocular motion muscles naked eyes nearer nose oblique observer ocular optic axes optic centers optic chiasm optic convergence optic nerve outward parallel perceived perception perfect image perfectly point of sight position projection pupil ray-lines rays refractive represent retina retinal images right and left right eye right-eye image rotation sclerotic screen seen single shut side stereoscope surface tion torsion turn the eyes vergence vertical meridian vibrations visual lines visual result