United States or Liechtenstein ? Vote for the TOP Country of the Week !
In screw vessels the thrust will be determined by the force turning round the screw, and by the smallness of the screw's pitch; for with any given force of torsion a fine pitch of screw will give a greater thrust than a coarse pitch of screw, just as is the case when a screw works in a solid nut. Q. Will you explain the use of the glass gauges affixed to the boiler?
He took two equal weights of a salt of radium and a salt of barium, which he made oscillate one after the other in a torsion balance. But for this explanation to be admitted, it would evidently need to be supported by very numerous facts.
The customary frame, strut rods, and torsion rods had been supplemented by the most extraordinary criss-cross of angle-iron braces it has ever been my fortune to behold. They ran from anywhere to everywhere beneath that car. I began to comprehend her cohesiveness. "Jim Coles, blacksmith at the O T, puts them braces in all our cars," explained Bill. "He's got her down to a system."
I was anxious to obtain wires which would preserve this structure against the destructive influence of torsion and vibrations, so that I could constantly employ the same wires without the comparatively long and tedious process of preparation.
Similar balls are fixed at the corners of a square 20.5 meters in the side, and connected in diagonal pairs by fine wire. The lever placed at equal distances from the fixed balls communicates, by the medium of the torsion wire, with the positive pole of a battery, P, the other pole being to earth.
A. Experiments upon the force requisite to twist off cast iron necks show that if the cube of the diameter of neck in inches be multiplied by 880, the product will be the force of torsion which will twist them off when acting at 6 inches radius; on this fact the following rule is founded: To find the diameter of a cast iron fly wheel shaft: multiply the square of the diameter of the cylinder in inches, by the length of the crank in inches, and extract the cube root of the product, which multiply by 0.3025, and the result will be the proper diameter of the shaft in inches at the smallest part, when of cast iron.
I twisted the shafting one way and the tube the other as far as I could, and pinned them together. In this way, by straining the whole outfit up to its elastic limit in opposite directions, the torsion was practically eliminated, and after that the governors ran together all right."
The sand is precipitated to the earth, and the dust floats off in dun, shapeless masses. Several have shut me within a space, and are slowly closing upon me. My dog howls and barks. The horse cowers with affright, and shivers between my thighs, uttering terrified expressions. My brain reels. Strange objects appear. The fever is upon me! The laden currents clash in their wild torsion.
I have succeeded in doing this, and in obtaining strong reversal of polarities, by superposing one polarity given while the rod is under a right elastic torsion, with another of the opposite polarity given under a left elastic torsion, the neutral point then being reached when the rod is free from torsion.
In employing torsion, the end of the vessel is caught with forceps, and the terminal portion twisted round several times. The object is to tear the inner and middle coats so that they curl up inside the lumen, while the outer fibrous coat is twisted into a cord which occludes the end of the vessel. Forci-pressure.
Word Of The Day