Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1881 - 275 páginas |
Dentro del libro
Resultados 1-5 de 44
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 . FIG . 8 . B In all dioptric instruments images are formed in this way . It is in this way that images are formed in the eye . In Fig . 8 it is seen ...
... already met , crossed , and again diverged . In both cases the image will be blurred . FIG . 8 . B In all dioptric instruments images are formed in this way . It is in this way that images are formed in the eye . In Fig . 8 it is seen ...
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 ...
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 cornea corresponding points cross depth of space distance distant objects distinct divergence double images evident exactly Experiment external images farther fibers field of view gaze Helmholtz heteronymous homonymous horizontal horopter horopteric line identical points Illustrations impression inches inclination interocular space inverted jects law of corresponding left eye left-eye image lens light line of sight look median line middle monocular motion muscles naked eyes nearer nose oblique observer ocular optic axes optic centers optic chiasm optic convergence optic nerve outward parallel perceived perception perfect image perfectly point of sight position projection pupil ray-lines rays refractive represent retina retinal images right and left right eye right-eye image rotation sclerotic screen seen single shut side stereoscope surface tion torsion turn the eyes vergence vertical meridian vibrations visual lines visual result