Sight: An Exposition of the Principles of Monocular and Binocular Vision |
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Página 25
Without images we would perceive light , but not objects ; and distinctness of
objects is exactly proportioned to distinctness of retinal images . If the image of an
object is distinct , the object will be distinct ; if the image is blurred , the object ,
both ...
Without images we would perceive light , but not objects ; and distinctness of
objects is exactly proportioned to distinctness of retinal images . If the image of an
object is distinct , the object will be distinct ; if the image is blurred , the object ,
both ...
Página 32
... edged with 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 ...
... edged with 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
But the plate or screen which receives the image and makes it visible must be
placed 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 . on page 27 ,
showing ...
But the plate or screen which receives the image and makes it visible must be
placed 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 . on page 27 ,
showing ...
Página 75
... of the retina for distinct perception is most perfect in the central spot , and
becomes gradually less and less perfect as we pass toward the anterior margin ,
where its perception is so imperfect that we can not tell exactly where the field of
view ...
... of the retina for distinct perception is most perfect in the central spot , and
becomes gradually less and less perfect as we pass toward the anterior margin ,
where its perception is so imperfect that we can not tell exactly where the field of
view ...
Página 108
If the left hand and the right forefinger , or any two dissimilar objects , be held up
before the eyes , say 8 to 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 ...
If the left hand and the right forefinger , or any two dissimilar objects , be held up
before the eyes , say 8 to 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 ...
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Términos y frases comunes
adjustment already angle appear becomes binocular called central spot circle Cloth colors combined complete condition cones convergence corresponding points cross Demy 8vo diagram direction distance distinct double images evident exactly Experiment explained external fact fall farther Fcap field of view figures front hand horizontal horopter Illustrations impression inches inclination increasing Large layer left eye lens less light look median middle motion move muscles natural nearer necessary nerve nose object observer opposite optic optic axes outward parallel passing perception perfect perfectly perspective phenomena plane Poems point of sight position post 8vo price 35 primary produced projection rays referred represent result retina retinal images right eye rotation screen Second Edition seen shown side single Small crown 8vo space stereoscope surface Third tion Translated true turn unite vertical vision visual lines vols wall whole
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Información bibliográfica
| Título | Sight: An Exposition of the Principles of Monocular and Binocular Vision Volumen33 de Internat. sci. series International scientific series |
| Autor | Joseph LeConte |
| Editor | D. Appleton, 1881 |
| Procedencia del original | Universidad de Oxford |
| Digitalizado | 7 Sep. 2006 |
| Largo | 275 páginas |
| Exportar cita | BiBTeX EndNote RefMan |