Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1897 - 318 páginas |
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Página 34
... wall , d . The optic axes are now nearly parallel , d R , d L. Tell a friend to ob- serve the pupil of the open eye . It is probably greatly enlarged . Now , with- out changing at all the direction of the line of sight or position of ...
... wall , d . The optic axes are now nearly parallel , d R , d L. Tell a friend to ob- serve the pupil of the open eye . It is probably greatly enlarged . Now , with- out changing at all the direction of the line of sight or position of ...
Página 62
... wall or ceiling , or , still better , on a bright sky , we see indistinct motes floating about in the field of view on the wall or sky , and slowly gravitating down- ward . Sometimes they are undulating , transparent tubes , with ...
... wall or ceiling , or , still better , on a bright sky , we see indistinct motes floating about in the field of view on the wall or sky , and slowly gravitating down- ward . Sometimes they are undulating , transparent tubes , with ...
Página 63
... wall opposite . Presently the field of view becomes dark from the intense impression of the light , and then , as you move the light about , there appears projected on the wall and covering its whole surface a shadowy , ghost - like ...
... wall opposite . Presently the field of view becomes dark from the intense impression of the light , and then , as you move the light about , there appears projected on the wall and covering its whole surface a shadowy , ghost - like ...
Página 64
... wall , we will see a faint spectrum of the window with all its bars projected against the wall . If we look intently and steadily at any object strongly differentiated from the rest of the wall of a room , as a small picture - frame or ...
... wall , we will see a faint spectrum of the window with all its bars projected against the wall . If we look intently and steadily at any object strongly differentiated from the rest of the wall of a room , as a small picture - frame or ...
Página 65
... wall . The whole pattern of the window will be distinctly seen in complementary colors . We are not now , however , discussing the colors of these spectra , but only their projection into space . Let it be observed here how differently ...
... wall . The whole pattern of the window will be distinctly seen in complementary colors . We are not now , however , discussing the colors of these spectra , but only their projection into space . Let it be observed here how differently ...
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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