Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1881 - 275 páginas |
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Página 67
... position in the field of view . In this familiar experiment the pressure indents the sclerotic and causes a change or irritation on the forward portion of the retina ; and any change whatever on the retina is always referred directly ...
... position in the field of view . In this familiar experiment the pressure indents the sclerotic and causes a change or irritation on the forward portion of the retina ; and any change whatever on the retina is always referred directly ...
Página 73
... positions of these correspondent points , external and internal , are completely reversed . Thus not only are the retinal images inverted , but the relative positions of these images are inverted , and the position of every focal point ...
... positions of these correspondent points , external and internal , are completely reversed . Thus not only are the retinal images inverted , but the relative positions of these images are inverted , and the position of every focal point ...
Página 74
... position in the axis of the eye , it is evident that on it must 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 ...
... position in the axis of the eye , it is evident that on it must 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 ...
Página 79
... position indicated by the dot . The central spot is repre- sented by c , in the axis A c , and the blind spot by o ... position of the eye , R ' , it has not reached it . At the third position , R " , it is upon it . At the fourth ...
... position indicated by the dot . The central spot is repre- sented by c , in the axis A c , and the blind spot by o ... position of the eye , R ' , it has not reached it . At the third position , R " , it is upon it . At the fourth ...
Página 80
... position , R ' ' ' , it has already crossed over and is now on the other side . At the third position , R " , the object B disappears from view . The distance at which the disappearance takes place will , of course , depend on the ...
... position , R ' ' ' , it has already crossed over and is now on the other side . At the third position , R " , the object B disappears from view . The distance at which the disappearance takes place will , of course , depend on the ...
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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