Sight: An Exposition of the Principles of Monocular And Binocular Vision
The book Sight: An Exposition of the Principles of Monocular And Binocular Vision was written by author Leconte, Joseph, 1823-1901 Here you can read free online of Sight: An Exposition of the Principles of Monocular And Binocular Vision book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Sight: An Exposition of the Principles of Monocular And Binocular Vision a good or bad book?
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187 to travel to the one side or the other, the image is seen to turn to the opposite side; i. e., when the eyes turn to the right, the image turns to the left, thus — ^^" ; when they turn to the left, the image rotates to the right, thus — "~^^ . If the visual plane be depressed, then motion to the right causes the image to rotate to the right, "X^ , and motion to the left causes it to ro- tate to the left, s^ •• These rotations of the image depend wholly on the oblique position of the eyes, a...nd it makes no difference how that oblique position is reached — whether by mo- tion along rectangular coordinates, as in the experiments, or by oblique motion from the primary position. Fur- thermore, the amount of rotation of the image increases with the amount of elevation or depression of the visual plane, and the amount of lateral motion of the eyes. Experiment 3. — The fact of rotation or torsion of the images, and the direction of that torsion, are easily determined by the somewhat rough methods detailed above ; but if we desire to measure the amount of -tor- sion, the wall or other experimental plane must be covered with rectangular coordinates, vertical and hori- zontal.
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