Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1881 - 275 páginas |
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Página 28
... falling on the lens , are brought to the same point , a ' , and from e to the point c ' , and so also for every intermediate point . Thus an image is formed which is both bright and very distinct if the receiving screen is suitably ...
... falling on the lens , are brought to the same point , a ' , and from e to the point c ' , and so also for every intermediate point . Thus an image is formed which is both bright and very distinct if the receiving screen is suitably ...
Página 31
... fall on the sides will be quenched , and not allowed to rebound by reflection , and thus fall on the image and spoil it . No light must fall on the image except that which comes directly from the object . So the eye also is a very small ...
... fall on the sides will be quenched , and not allowed to rebound by reflection , and thus fall on the image and spoil it . No light must fall on the image except that which comes directly from the object . So the eye also is a very small ...
Página 55
... fall upon and impress the retina . The thickness of this nervous expansion is about one hundredth of an inch , or about the thickness of thin cardboard , at the bottom or thickest part , but thins to one half that amount on the anterior ...
... fall upon and impress the retina . The thickness of this nervous expansion is about one hundredth of an inch , or about the thickness of thin cardboard , at the bottom or thickest part , but thins to one half that amount on the anterior ...
Página 74
... fall the image of the object or part of the object looked at , or of all points in the visual line or line of sight . Now , if we look steadily and attentively on any spot on the wall , and , without moving the eyes , observe the ...
... fall the image of the object or part of the object looked at , or of all points in the visual line or line of sight . Now , if we look steadily and attentively on any spot on the wall , and , without moving the eyes , observe the ...
Página 77
... fall on the same retinal cone , they will make but one impression , and therefore be seen as one ; but if they are far enough apart to impress two cones , then they will be seen as two points . So also 7700 of an object : if its image ...
... fall on the same retinal cone , they will make but one impression , and therefore be seen as one ; but if they are far enough apart to impress two cones , then they will be seen as two points . So also 7700 of an object : if its image ...
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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 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