Hand-book to the PhotochromoscopeSimpkin, Marshall, Hamilton, Kent, 1894 - 50 pages |
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Common terms and phrases
Abney apparatus arc light blue brass guides bright chromoscope claims COLOR IN NATURE color photography color vision colored light Composite Heliochromy defect different spectrum rays effect of light excite the respective eye-piece Franklin Institute Frederic E fundamental blue-violet sensation fundamental color sensations fundamental green sensation fundamental red sensation glass HARVARD COLLEGE Hauron illumination inclined mirror light and shade LUMINOSITY natural colors NATURE OF LIGHT negative objective lens optical illusion ordinary Photo Photochromo Photochromoscope photographic processes Photographic Society placed primary colors problem of reproducing procedure Professor Rood Professor Von Bezold rays to excite reproduce the colours respective fundamental color retina scientific sets of nerves shade the effect silver mirror single exposure single sensitive plate Society of Arts Society of Philadelphia special camera system of color THEORY OF COLOR three images tint transparent mirror triple photograph United States Patent vibrations visible spectrum rays Vogel waves yellow Young-Helmholtz Theory
Popular passages
Page 29 - ... strikes them, without taking all the precautions necessary for an experiment in a physical laboratory. Even if the surface employed be white and flat, still some portions of it are sure to be more highly illuminated than others, and hence to appear a little more yellowish or less...
Page 31 - The victorious beauty of the rose as compared with other flowers, depends wholly on the delicacy and quantity of its colour gradations, all other flowers being either less rich in gradation, not having so many folds of leaf; or less tender, being patched and veined instead of flushed.
Page 30 - ... changes by which she constantly varies the aspects of the commonest objects. This orderly succession of tints gently blending into one another is one of the greatest sources of beauty that we are acquainted with, and the best artists constantly strive to introduce more and more of this element into their works, relying for their triumphs far more on gradations of tint than on contrasts.
Page 32 - THE power to perceive colour is not one of the most indispensable endowments of our race ; deprived of its possession, we should be able not only to exist, but even to attain a high state of intellectual and aesthetic cultivation. Eyes gifted merely with a sense for light and shade would answer quite well for most practical purposes, and they would still reveal to us in the material universe an amount of beauty far transcending our capacity for reception. " But over and above this we have received...
Page 31 - ... head, if one part of it is not darker than the rest, it is a bad touch ; for it is not merely because the natural fact is so, that your...
Page 32 - The power to perceive color is one of the most indispensable endowments of our race ; deprived of its possession, we should be able not only to exist, but even to attain a high state of intellectual and esthetic cultivation. Eyes gifted merely with a sense for light and shade would answer quite well for most practical purposes, and they would still reveal to us in the material universe an amount of beauty far transcending our capacity for reception. But over and above this we have received yet one...
Page 36 - The first of these devices is a camera attachment by means of which the three pictures representing the effect upon the three fundamental color-sensations are made by a single exposure on a single sensitive plate, and from a single point of view. The...
Page 31 - ... to be beautiful by the pure instinct of every human mind, and both, considered as types, expressing the law of gradual change and progress in the human soul itself. What the difference is in mere beauty between a gradated and ungradated color may be seen easily by laying an even tint of rose color on paper, and putting a rose-leaf beside it.
Page 45 - The photochromoscope ; the only successful device for optically re-combining the three images of the chromogram to form one image on the retina of the eye, reproducing the colours.
Page 35 - In the production of a triple photograph or chromogram, one image of which represents by its light and shade the effect of light from the object upon the fundamental red sensation, another the effect upon the fundamental green sensation, another the effect upon the fundamental blue-violet sensation...