Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1881 - 275 páginas |
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Página 13
... and objectiveness . We distinctly perceive the sensation as in the nose , and yet by experience we have learned to refer it to an object at a distance . In hearing , we already refer RELATION OF GENERAL TO SPECIAL SENSE . 13.
... and objectiveness . We distinctly perceive the sensation as in the nose , and yet by experience we have learned to refer it to an object at a distance . In hearing , we already refer RELATION OF GENERAL TO SPECIAL SENSE . 13.
Página 14
... already refer the cause so completely to a distant object that there is but the smallest possible remnant of a consciousness of sensa- tion in the ear ; the sound does not seem to be in the ear , but in yonder bell . Finally , in sight ...
... already refer the cause so completely to a distant object that there is but the smallest possible remnant of a consciousness of sensa- tion in the ear ; the sound does not seem to be in the ear , but in yonder bell . Finally , in sight ...
Página 22
... already described . Just before separating from the sclerotic to form the iris , it splits into two layers : one , the anterior , goes to form the iris , as already said , while the other , the posterior , is gathered into a circular ...
... already described . Just before separating from the sclerotic to form the iris , it splits into two layers : one , the anterior , goes to form the iris , as already said , while the other , the posterior , is gathered into a circular ...
Página 28
... already met , crossed , and again diverged . In both cases the image will be blurred . A FIG . 8 . B DIAGRAM ILLUSTRATING THE FORMATION OF AN IMAGE ON THE RETINA . In all dioptric instruments images are formed in this way . It is in ...
... already met , crossed , and again diverged . In both cases the image will be blurred . A FIG . 8 . B DIAGRAM ILLUSTRATING THE FORMATION OF AN IMAGE ON THE RETINA . In all dioptric instruments images are formed in this way . It is in ...
Página 31
... already been ex- plained ( page 28 ) . It is precisely the same in both cases . But lenses which form a perfect image are very difficult of construction . There are , especially , two main im- perfections which must be corrected , viz ...
... already been ex- plained ( page 28 ) . It is precisely the same in both cases . But lenses which form a perfect image are very difficult of construction . There are , especially , two main im- perfections which must be corrected , viz ...
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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