Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1881 - 275 páginas |
Dentro del libro
Resultados 1-5 de 45
Página 10
... distinct in the higher animals are represented by an unmodified cellular structure , performing all the func- tions of the animal body , but in an imperfect manner . Each cell in such an organism will feel like a nervous cell , contract ...
... distinct in the higher animals are represented by an unmodified cellular structure , performing all the func- tions of the animal body , but in an imperfect manner . Each cell in such an organism will feel like a nervous cell , contract ...
Página 14
... sense - organs , the eye , that we are now about to treat . It may be well to bear in mind and keep distinct what may be called the direct gifts of sight , and what are added by the mind as judgments based upon these 14 INTRODUCTORY .
... sense - organs , the eye , that we are now about to treat . It may be well to bear in mind and keep distinct what may be called the direct gifts of sight , and what are added by the mind as judgments based upon these 14 INTRODUCTORY .
Página 24
... distinct vision ; cataract , a common cause of blindness , arises from its opacity . The lens , with its continuing curtain , completely divides the interior of the ball into two compartments , an anterior and a posterior . ( b . ) The ...
... distinct vision ; cataract , a common cause of blindness , arises from its opacity . The lens , with its continuing curtain , completely divides the interior of the ball into two compartments , an anterior and a posterior . ( b . ) The ...
Página 25
... distinct , the object will be distinct ; if the image is blurred , the object , both in outline and in details of surface , will be blurred . If there is no image , no object will be visible . Therefore the image must be a fac- simile ...
... distinct , the object will be distinct ; if the image is blurred , the object , both in outline and in details of surface , will be blurred . If there is no image , no object will be visible . Therefore the image must be a fac- simile ...
Página 26
... distinct . 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 ...
... distinct . 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 ...
Otras ediciones - Ver todas
Términos y frases comunes
angle axis bacillary layer binocular eye binocular perspective binocular vision camera central spot ciliary muscle circle colors combined images cones corresponding points cross depth of space distant objects distinct double images evident exactly Experiment external images eyes by squinting farther fibers field of view figures finger focal adjustment foreground forms of perspective gaze heteronymously homonymously horizontal horopter identical points impression inches inclination interocular space inverted jects left eye lens less convergence light line of sight look median plane monocular images motion muscles naked eyes nearer nose object or scene oblique observer ocular optic axes optic chiasm optic convergence optic nerve outward parallel perceived perception of depth perfect image perfectly point of sight position projection rays refractive represent retina retinal images right and left right eye rotation sclerotic screen seen single side stereoscope stereoscopic pictures surface tion torsion turn the eyes unite visual lines visual result