Sight: An Exposition of the Principles of Monocular and Binocular Vision |
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Página 25
A serviceable image must be sufficiently bright , and perfectly sharp and distinct
in outline . Brightness only requires a sufficient amount of light . In order to be
perfectly distinct , it is necessary that rays from different points in the object , even
the ...
A serviceable image must be sufficiently bright , and perfectly sharp and distinct
in outline . Brightness only requires a sufficient amount of light . In order to be
perfectly distinct , it is necessary that rays from different points in the object , even
the ...
Página 26
Thus it is seen that rays from widely different points in the object mix with each
other on the receiving screen ; much more , then , would rays from contigu ous
points of the object mix . In such a case , the mixing is so great that no
recognizable ...
Thus it is seen that rays from widely different points in the object mix with each
other on the receiving screen ; much more , then , would rays from contigu ous
points of the object mix . In such a case , the mixing is so great that no
recognizable ...
Página 27
... viz . , brightness and distinctness at the same time . If an object , a c , be placed
before a lens , L ( Fig . 7 ) , then all the rays diverging from any point , b , are We
pass over , with bare mention , some obvious. FORMATION OF THE IMAGE . 27.
... viz . , brightness and distinctness at the same time . If an object , a c , be placed
before a lens , L ( Fig . 7 ) , then all the rays diverging from any point , b , are We
pass over , with bare mention , some obvious. FORMATION OF THE IMAGE . 27.
Página 28
Of the divergent pencil , 6 L L , the central ray passes straight through without
deviation ; rays a little way from the central are bent a little ; rays farther away are
bent more and more according to their angle of divergence , so that they all meet
at ...
Of the divergent pencil , 6 L L , the central ray passes straight through without
deviation ; rays a little way from the central are bent a little ; rays farther away are
bent more and more according to their angle of divergence , so that they all meet
at ...
Página 29
Now , since the rays from every intermediate point of the object will be similarly
focused , we will have a perfect image of the object painted on the retina . This
fundamental fact may be proved in many ways by observations on the dead eye :
1.
Now , since the rays from every intermediate point of the object will be similarly
focused , we will have a perfect image of the object painted on the retina . This
fundamental fact may be proved in many ways by observations on the dead eye :
1.
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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 |
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