"Opacity" Quotes from Famous Books
 ... Verona. The finer dust among which these pebbles are dispersed is taken up by the rivers, fed into continual strength by the Alpine snow, so that, however pure their waters may be when they issue from the lakes at the foot of the great chain, they become of the color and opacity of clay before they reach the Adriatic; the sediment which they bear is at once thrown down as they enter the sea, forming a vast belt of low land along the eastern coast of Italy. The powerful stream ...
— The Stones of Venice, Volume II (of 3) • John Ruskin
... will help us here. We have certain qualities in common with inanimate matter, such as weight, opacity, resilience. It is clear that these are not human. We have other qualities in common with all forms of life; cellular construction, for instance, the reproduction of cells and the need of nutrition. These again are not human. We have others, many others, common ...
— The Forerunner, Volume 1 (1909-1910) • Charlotte Perkins Gilman
... Transparency and opacity constitute another contrast of colouring, the former of which belongs to shade and blackness, the latter to light and whiteness. Even contrast has its contrast, for gradations or intermedia are opposed to contrasts or extremes; and, upon the right management of contrasts and gradations ...
— Field's Chromatography - or Treatise on Colours and Pigments as Used by Artists • George Field
... from this, and other causes, it arises that when the naked light from fifty cells is looked at the blur of light upon the retina is sufficient to destroy the definition of the retinal image of the carbons. A long list of indictments might indeed be brought against the eye—its opacity, its want of symmetry, its lack of achromatism, its partial blindness. All these taken together caused Helmholt to say that, if any optician sent him an instrument so defective, he would be justified in sending it back with the severest censure. ...
— Six Lectures on Light - Delivered In The United States In 1872-1873 • John Tyndall
... beautiful example of this structure, in a specimen of obsidian from Mexico, which is shaded and zoned, like the finest agate, with numerous, straight, parallel layers, more or less opaque and white, or almost perfectly glassy; the degree of opacity and glassiness depending on the number of microscopically minute, flattened air-cells; in this case, it is scarcely possible to doubt but that the mass, to which the fragment belonged, must have been subjected to some, probably prolonged, action, causing the ...
— Volcanic Islands • Charles Darwin
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