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Porosity   Listen
noun
Porosity  n.  The quality or state of being porous; opposed to density.






Collaborative International Dictionary of English 0.48








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"Porosity" Quotes from Famous Books



... that examining the vast porosity of bodies, every particle having its pores, and every particle of those particles having its own, he shows we are not certain that there is a cubic inch of solid matter in the universe, so far are we from conceiving what matter is. Having thus divided, as it were, light into its elements, and ...
— Letters on England • Voltaire

... pretended to be the definition of matter, is only an hypothesis of careless naturalists, a gross conclusion deduced from a superficial judgment. Experience shows that matter possesses infinite divisibility, infinite expansibility, porosity without assignable limits, and permeability by heat, electricity, and magnetism, together with a power of retaining them indefinitely; affinities, reciprocal influences, and transformations without number: qualities, all of them, hardly compatible with the assumption ...
— The Philosophy of Misery • Joseph-Pierre Proudhon

... this temperature from the cylinder to the charcoal it is indispensable that the air surrounding the cylinder be heated to 480 deg. to 550 deg.. If the heating of the animal black exceeds 500 deg. the product hardens, diminishes in volume, and loses its porosity. There are two methods of ascertaining the temperature of the red-hot bone black by means of the pyrometer: First, by inserting the tube of the instrument into the black. (Fig. 6, a.) Second, by finding the temperature of the hot gases in the furnaces (Fig. 6, ...
— Scientific American Supplement, No. 288 - July 9, 1881 • Various

... does not remove the dirty material, but loosens up the pores of the surface, and through this porosity permits clogging to penetrate deeper into the filter. The method of raking with water on the bed, although it removes some of the organic dirt, also permits deeper penetration of the remainder. The latest devised system of washing the sand in place, by upward spraying with water, ...
— Transactions of the American Society of Civil Engineers, vol. LXXII, June, 1911 • E. D. Hardy

... uses for water: It will not be long before every truck and every commercial flower garden will have overhead irrigation. This is merely gas pipes ("seconds" rejected for blow holes or porosity are usually used) supported on posts say six feet above the ground. They are usually placed parallel about fifty feet apart, which will make four to the acre square, and have a single row of holes and a handle on each ...
— Three Acres and Liberty • Bolton Hall



Words linked to "Porosity" :   permeability, consistency, body, consistence, porous, porousness, eubstance, solidity, sponginess, permeableness



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