Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1897 - 318 páginas |
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Página 5
... ray of light . The following illustration may help : The average or green ray vibrates about 600,000,000,000,000 times in a second . If t repre- sents the time of one vibration , then t : 1 scc . : : 1 sec . :: 20,000,000 years - i . e ...
... ray of light . The following illustration may help : The average or green ray vibrates about 600,000,000,000,000 times in a second . If t repre- sents the time of one vibration , then t : 1 scc . : : 1 sec . :: 20,000,000 years - i . e ...
Página 18
... rays from different points in the object , even the most contiguous , should not mix on the image , but all the rays from each point on the object must be carried to its own point on the image . Now , it is impossible that both of these ...
... rays from different points in the object , even the most contiguous , should not mix on the image , but all the rays from each point on the object must be carried to its own point on the image . Now , it is impossible that both of these ...
Página 19
... rays from contiguous points of the object mix . In such a case the mixing is so great that no recognizable image is ... ray only passes from each point to the object , and goes to its own place in the image ( Fig . 6 , B ) , and the ...
... rays from contiguous points of the object mix . In such a case the mixing is so great that no recognizable image is ... ray only passes from each point to the object , and goes to its own place in the image ( Fig . 6 , B ) , and the ...
Página 20
... rays diverging from any point , b , are bent so as to come together again at the point b ' . Of the divergent pencil , b L L , the central ray passes straight through without deviation ; rays a little way from the central are bent a ...
... rays diverging from any point , b , are bent so as to come together again at the point b ' . Of the divergent pencil , b L L , the central ray passes straight through without deviation ; rays a little way from the central are bent a ...
Página 21
... rays meet . The billions of rays from millions of points of the sur- face of the object are , as it were , sifted out by the law of refraction , and each safely conveyed to its own point in the image ; so that for every radiant point of ...
... rays meet . The billions of rays from millions of points of the sur- face of the object are , as it were , sifted out by the law of refraction , and each safely conveyed to its own point in the image ; so that for every radiant point of ...
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Términos y frases comunes
adjustment angle axis bacillary layer becomes binocular eye binocular perspective binocular vision blind spot camera central spot ciliary muscle circle colors combined image concave corresponding points cross defect depth of space distance distant objects distinct divergence double images evident exactly Experiment explained external images farther fibers field of view focal fore fovea Helmholtz heteronymous homonymous horizontal horopter horopteric line Illustrations impression inches inclined interocular space left eye left-eye image lens light line of sight look median plane middle monocular motion muscles nearer normal eye nose oblique observer ocular optic axes optic chiasm optic nerve optic vesicle outward parallel perceived perception perfectly phantom phenomena point of sight position primary projection pupil ray-line rays refractive represent retina retinal images right and left right eye right-eye image rotation sclerotic screen seen single sensation side stereoscope surface tion torsion turn the eyes vergence vibrations visual lines visual result