Sight: An Exposition of the Principles of Monocular and Binocular Vision |
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Página 26
But , in the mean time , the quantity of light is becoming less and less , and
therefore the image fainter and fainter . If we suppose the hole to become a
mathematical point , then one ray only passes from each point to the object , and
goes to its ...
But , in the mean time , the quantity of light is becoming less and less , and
therefore the image fainter and fainter . If we suppose the hole to become a
mathematical point , then one ray only passes from each point to the object , and
goes to its ...
Página 51
Hypermetropy . We have dwelt on the two most common defects of the eye , but
there are others less common , which must be briefly characterized .
Hypermetropy is the true opposite of myopy . Like the latter , it is a structural
defect , but in the ...
Hypermetropy . We have dwelt on the two most common defects of the eye , but
there are others less common , which must be briefly characterized .
Hypermetropy is the true opposite of myopy . Like the latter , it is a structural
defect , but in the ...
Página 58
In this spot , therefore , there are probably no less than one million cones in a
square to inch . FIG . 23 . BacillARY LAYER , VIEWED FROM THE OUTSIDE
SURFACE . - A , appearance of usual surface ; B , appearance of surface of the
raised ...
In this spot , therefore , there are probably no less than one million cones in a
square to inch . FIG . 23 . BacillARY LAYER , VIEWED FROM THE OUTSIDE
SURFACE . - A , appearance of usual surface ; B , appearance of surface of the
raised ...
Página 74
... attentively on any spot on the wall , and , without moving the eyes , observe the
gradation of distinctness over the field , we find that the distinctness is most
perfect at the point of sight and a very small area about that point , and becomes
less ...
... attentively on any spot on the wall , and , without moving the eyes , observe the
gradation of distinctness over the field , we find that the distinctness is most
perfect at the point of sight and a very small area about that point , and becomes
less ...
Página 75
Therefore the organization 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 ...
Therefore the organization 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 ...
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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 |