Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1897 - 318 páginas |
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Página 11
... , besides rotating the eye on its visual axis in opposite directions , co - operate with one another in turning the eye outward . This is neces- sary to counteract the tendency of the superior and inferior GENERAL STRUCTURE OF THE EYE . 11.
... , besides rotating the eye on its visual axis in opposite directions , co - operate with one another in turning the eye outward . This is neces- sary to counteract the tendency of the superior and inferior GENERAL STRUCTURE OF THE EYE . 11.
Página 27
... opposite direction by the concave lens . Such a com- bination will therefore make no image . In order that such a combination should make an image at all , it is necessary that the convexity should predominate over the concavity , as in ...
... opposite direction by the concave lens . Such a com- bination will therefore make no image . In order that such a combination should make an image at all , it is necessary that the convexity should predominate over the concavity , as in ...
Página 42
... opposite of myopy . Like the latter , it is a structural defect , but in the opposite direction . In this case the lens is not sufficiently refractive for the length of the chamber , or the receiving screen is too near ( at S'S " , Fig ...
... opposite of myopy . Like the latter , it is a structural defect , but in the opposite direction . In this case the lens is not sufficiently refractive for the length of the chamber , or the receiving screen is too near ( at S'S " , Fig ...
Página 61
... opposite or external side . The spectrum thus produced has a deep steel - blue center , with a brilliant yellow border , and re- minds one of the beauty spots on a peacock's feather or a butterfly's wing . Remove the pressure to any ...
... opposite or external side . The spectrum thus produced has a deep steel - blue center , with a brilliant yellow border , and re- minds one of the beauty spots on a peacock's feather or a butterfly's wing . Remove the pressure to any ...
Página 63
... 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 image ...
... 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 image ...
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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