Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1881 - 275 páginas |
Dentro del libro
Resultados 1-5 de 25
Página 67
... 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 68
... wall opposite . Presently the field of view be- comes 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 be- comes 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 69
... wall : a vivid colored spectrum of the sun ( or many of them , if the eye has not been steady while regarding the sun ) is projected into the field of view , and follows all the motions of the eye . This spectrum , on a bright ground ...
... wall : a vivid colored spectrum of the sun ( or many of them , if the eye has not been steady while regarding the sun ) is projected into the field of view , and follows all the motions of the eye . This spectrum , on a bright ground ...
Página 70
... 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 a clock , then look to some other part of the wall , the spectrum of the object will be ...
... 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 a clock , then look to some other part of the wall , the spectrum of the object will be ...
Página 71
Joseph LeConte. on a white wall . The whole pattern of the window will be distinctly seen in complementary colors . Let it be observed here how differently spectral images behave from objects . When we move the eyes about , the images of ...
Joseph LeConte. on a white wall . The whole pattern of the window will be distinctly seen in complementary colors . Let it be observed here how differently spectral images behave from objects . When we move the eyes about , the images of ...
Términos y frases comunes
angle animals axis bacillary layer binocular eye binocular perspective binocular vision camera central spot ciliary muscle circle Cloth colors combined images cones 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 left eye left-eye image lens light line of sight look median line monocular motion muscles naked eyes natural 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 ray-lines rays refractive represent retina retinal images right and left right eye rotation sclerotic screen seen single shut side Sociology stereoscope surface T. H. HUXLEY tion torsion vertical meridian vibrations visual lines visual result vols
Pasajes populares
Página 275 - Animal Mechanism : a Treatise on Terrestrial and Aerial Locomotion. By Professor EJ Marey. With 117 Illustrations. Second Edition. Crown 8vo, 5*.
Página 275 - XXII. The Theory of Sound in its Relation to Music. By Prof. Pietro Blaserna.
Página 275 - The Intellectual Development of Europe." Price, $1.75. No. 13. THE DOCTRINE OF DESCENT, AND DARWINISM. By Prof. OSCAR SCHMIDT, Strasburg University.