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There are two methods of manufacturing wood pulp; the mechanical, by grinding up the wood, and the chemical, by treating it chemically. By the mechanical method the wood is pressed against a large grindstone which revolves at a high speed.

He went on, explaining the consequences of the weapon, "An atom, and therefore all matter, which is made up of atoms, is engaged in a constant revolution around the nucleus, in the same way in which our solar system revolves around our sun, and our sun around the black hole in the center of the galaxy.

If, from a certain moment, gravitation were to become the only force in the solar system, the earth would fall upon the surface of the sun, and be annihilated; but the earth continues in existence because of the action of another force the projectile force which so far counteracts the force of the sun's attraction, that the earth revolves around the sun instead of falling upon its surface.

The heat, of whatever origin, is applied from below, and the shaft being revolved, four of the armatures lose their magnetism constantly, while the other four gain it, so to speak. As the moving part revolves, therefore, currents of electricity are set up in the wires of the armatures and are collected by a commutator, as in an ordinary dynamo, placed on the upper end of the central shaft.

It is entitled to demand that that citizen shall be worthy of a place in its midst and that he shall be properly introduced by a responsible father and a responsible mother. The whole of sexual morality, as Ellen Key has said, revolves round the child.

I listened to the whole program and then proceeded once more to view the diamond splendors before I left this world where I was well paid for my tarrying. Triumphant Feat of Orion. As I continued ranging among the planets of the constellation of Orion, I felt an indescribable desire to pause at a very small orb which revolves around Saiph, a star of the third magnitude.

But, as soon as a core of thread has been formed, it is in contact with the entire surface of the cone, and thus revolves with a mean velocity until it is finished.

We, who know that the earth revolves round the sun once in a year, can understand that the apparent motion of a planet is only its motion relative to the earth.

Really the wheel of fortune in Paris revolves in a way to make one's head swim!

But the Inquisition now took up the matter as heretical and contrary to the express words of Scripture; and in 1616, Copernicus's work, "De Revolutionibus," Kepler's "Epitome," and some of Galileo's own letters, were placed on the list of prohibited books; and he himself, being then in Rome, received formal notice not to teach that the earth revolves round the sun.