Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1881 - 275 páginas |
Dentro del libro
Resultados 1-5 de 35
Página 28
... farther away are bent more and more according to their angle of divergence , so that they all meet at the same point , b ' . Similarly all the rays proceeding from a , and falling on the lens , are brought to the same point , a ' , and ...
... farther away are bent more and more according to their angle of divergence , so that they all meet at the same point , b ' . Similarly all the rays proceeding from a , and falling on the lens , are brought to the same point , a ' , and ...
Página 41
... 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 42
... farther back from the lens . But now it is known that the retinal screen remains immovable , and the lens changes its form so as to throw the image to the same place . Experiment . This is proved in the following man- ner : A person is ...
... farther back from the lens . But now it is known that the retinal screen remains immovable , and the lens changes its form so as to throw the image to the same place . Experiment . This is proved in the following man- ner : A person is ...
Página 47
... farther limit of perfect image , however , it has its own range of adjust- ment , like the normal eye . The range of the normal eye is from infinite distance to five inches . In the myopic eye the range may be from a yard to four inches ...
... farther limit of perfect image , however , it has its own range of adjust- ment , like the normal eye . The range of the normal eye is from infinite distance to five inches . In the myopic eye the range may be from a yard to four inches ...
Página 50
... farther limit ; in the nor- mal eye it is between five inches , near limit , and infinite distance , 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 nor- mal eye it is between five inches , near limit , and infinite distance , 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 ...
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