Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1881 - 275 páginas |
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Página 14
... increasing specialization and refinement of the senses . But only in the two higher senses - only in those senses in which there is no direct contact , but the impressing force is conveyed by means of vibration through a medium - only ...
... increasing specialization and refinement of the senses . But only in the two higher senses - only in those senses in which there is no direct contact , but the impressing force is conveyed by means of vibration through a medium - only ...
Página 23
... increasing in density from surface to center , as shown in Fig . 5 , e , and in Fig . 13 , on page 37. The lens is invested with a very thin , transparent membrane , capsule of the lens , which not only invests it , but continues ...
... increasing in density from surface to center , as shown in Fig . 5 , e , and in Fig . 13 , on page 37. The lens is invested with a very thin , transparent membrane , capsule of the lens , which not only invests it , but continues ...
Página 26
... is now infinitely faint , and therefore invisible . If , now , we try to increase the brightness by increasing the size of the hole , in propor- tion as we get brightness do we lose distinctness . 26 MONOCULAR VISION .
... is now infinitely faint , and therefore invisible . If , now , we try to increase the brightness by increasing the size of the hole , in propor- tion as we get brightness do we lose distinctness . 26 MONOCULAR VISION .
Página 35
... increasing with the distance from the center ; therefore the focal point for marginal rays is not the FIG . 12 . α ŏ S same as for the central rays , but nearer . In Fig . 12 the marginal rays , a r ' , a r ' , are brought to a focus at ...
... increasing with the distance from the center ; therefore the focal point for marginal rays is not the FIG . 12 . α ŏ S same as for the central rays , but nearer . In Fig . 12 the marginal rays , a r ' , a r ' , are brought to a focus at ...
Página 36
... increasing the curvature of this part or by increasing its density , and therefore its refractive index . It is by the former method that art makes the correction . By mathematical calculation , it is found that the curve must be that ...
... increasing the curvature of this part or by increasing its density , and therefore its refractive index . It is by the former method that art makes the correction . By mathematical calculation , it is found that the curve must be that ...
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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