"Porosity" Quotes from Famous Books
 ... above it will be seen that these soils, while possessing a large amount of matter available for plant growth, are exceedingly friable, and would be very easily worked. They would absorb heat quickly, and from their porosity would require little drainage, and so would be both warm and dry soils, and form fertile land suitable for almost all kinds of agricultural and ...
— A start in life • C. F. Dowsett
... 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
... porosity in the trappean formations, the appearances are in a great degree deceptive, for all amygdaloids are, as already explained, porous rocks, into the cells of which mineral matter such as silex, carbonate of lime, and other ingredients, have ...
— The Student's Elements of Geology • Sir Charles Lyell
... to tons depends on the specific gravity of the ore, its porosity, and moisture. The variability of ores throughout the mine in all these particulars renders any method of calculation simply an approximation in the end. The factors which must remain unknown necessarily ...
— Principles of Mining - Valuation, Organization and Administration • Herbert C. Hoover
... in England, where Dr. Dalton, a skillful examiner of atmospheric phenomena, estimates the annual deposit of dew to equal a depth of five inches, or about one-fifth of the rain-fall. Water thus deposited on the soil is absorbed more or less completely, in proportion to the porosity of the ground. ...
— Draining for Profit, and Draining for Health • George E. Waring |
