Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1897 - 318 páginas |
Dentro del libro
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Página 10
... middle or equator of the globe ( Fig . 3 ) . They are called severally superior , inferior , exter- nal , and internal rectus . The first turns the ball up- ward , the second downward , the third to the right , and the fourth to the ...
... middle or equator of the globe ( Fig . 3 ) . They are called severally superior , inferior , exter- nal , and internal rectus . The first turns the ball up- ward , the second downward , the third to the right , and the fourth to the ...
Página 14
... middle . In its center is a round hole , called the pupil , corre- sponding in position with the hole in the watch face for attachment of the hands . The pupil seems to be jet black , because the observer looks through the pupil into ...
... middle . In its center is a round hole , called the pupil , corre- sponding in position with the hole in the watch face for attachment of the hands . The pupil seems to be jet black , because the observer looks through the pupil into ...
Página 31
... middle of the field of view , i . e . , nearly directly in front , are brought to a perfect focus , the rays from radiants situ- ated near the margins of the field of view , i . e . , of very oblique pencils , are not brought to a focus ...
... middle of the field of view , i . e . , nearly directly in front , are brought to a perfect focus , the rays from radiants situ- ated near the margins of the field of view , i . e . , of very oblique pencils , are not brought to a focus ...
Página 32
... middle . The circumference of the disk is immovably fixed to the sclerotic at its junction with the cornea ; but the margin of the circular hole , or pupil , is free to move . The disk itself is composed of two sets of contractile ...
... middle . The circumference of the disk is immovably fixed to the sclerotic at its junction with the cornea ; but the margin of the circular hole , or pupil , is free to move . The disk itself is composed of two sets of contractile ...
Página 34
... middle , and sliding over each other in such wise that by turning a milled head in one direction they all move toward the central point and diminish the open- ing , while by turning in the contrary direction they all move away from the ...
... middle , and sliding over each other in such wise that by turning a milled head in one direction they all move toward the central point and diminish the open- ing , while by turning in the contrary direction they all move away from the ...
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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