Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1897 - 318 páginas |
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Página 20
... Of the divergent pencil , b 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 20 MONOCULAR VISION .
... Of the divergent pencil , b 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 20 MONOCULAR VISION .
Página 21
... the nodal point . 4. As the object moves farther away , the image comes nearer to the lens and becomes smaller . DIAGRAM SHOWING THE FORMATION OF A LENS IMAGE . DIAGRAM SHOWING THE FORMATION OF A LENS IMAGE . FORMATION OF THE IMAGE . 21.
... the nodal point . 4. As the object moves farther away , the image comes nearer to the lens and becomes smaller . DIAGRAM SHOWING THE FORMATION OF A LENS IMAGE . DIAGRAM SHOWING THE FORMATION OF A LENS IMAGE . FORMATION OF THE IMAGE . 21.
Página 36
... farther back ; when the object recedes , we slide up the tube so as to bring the receiving plate nearer the lens . So in the opera - glass we elongate the tube for near ob- jects and shorten it for more distant . In the micro- scope ...
... farther back ; when the object recedes , we slide up the tube so as to bring the receiving plate nearer the lens . So in the opera - glass we elongate the tube for near ob- jects and shorten it for more distant . In the micro- scope ...
Página 43
... farther off than in the normal . When , however , the hypermetropic eye loses its power of adjustment with age , then even distant objects can not be seen distinctly . Such persons , there- fore , while young , should habitually wear ...
... farther off than in the normal . When , however , the hypermetropic eye loses its power of adjustment with age , then even distant objects can not be seen distinctly . Such persons , there- fore , while young , should habitually wear ...
Página 45
... farther limit ; in the normal eye it is between five inches , near limit , and infinite dis- tance , the farther limit ( if limit it can be called ) ; in the myopic eye the nearer limit may be two inches , the farther limit four inches ...
... farther limit ; in the normal eye it is between five inches , near limit , and infinite dis- tance , the farther limit ( if limit it can be called ) ; in the myopic eye the nearer limit may be two inches , the farther limit four inches ...
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Términos y frases comunes
adjustment angle axis bacillary layer becomes binocular eye binocular perspective binocular vision blind spot camera central spot ciliary muscle circle colors combined image concave corresponding points cross defect depth of space distance distant objects distinct divergence double images evident exactly Experiment explained external images farther fibers field of view focal fore fovea Helmholtz heteronymous homonymous horizontal horopter horopteric line Illustrations impression inches inclined interocular space left eye left-eye image lens light line of sight look median plane middle monocular motion muscles nearer normal eye nose oblique observer ocular optic axes optic chiasm optic nerve optic vesicle outward parallel perceived perception perfectly phantom phenomena point of sight position primary projection pupil ray-line rays refractive represent retina retinal images right and left right eye right-eye image rotation sclerotic screen seen single sensation side stereoscope surface tion torsion turn the eyes vergence vibrations visual lines visual result