T KY S Gaku-Buturigakkwai Kizi

T KY S Gaku-Buturigakkwai Kizi

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1906 edition. Excerpt: ...EFFECT OF HEAT ON THE KINETIC MODULUS OF ELASTICITY OF ROCKS. THE importance of examining the effect of high temperature on the elastic constants of rocks would be recognized by any one studying geophysics. Elastic constants of rocks at ordinary temperature have already been investigated both by statical and kinetical methods by Prof. H. Nagaoka and the present author. In applying the results to dynamical geology or other departments of science treating the deformation and vibration of the earth, the subterranean heat which rapidly increases with depth can never be put out of consideration. The following pages contain the experimental result made on 17 specimens of rocks of different kinds and ages: i.e. Peridotite (2), Serpentine, Chloriteschist, Graphiteschist (2), Clayslate, Granite (2), Marble, Limestone, Audesite (3), Sandstone (2), Rhyolite. These experiments form a sequel of the allied investigation undertaken at the expense of the Earthquake Investigation Committee. The principle of the method of measurement and the mode of reduction of the result is already published in Vol. II, No. 15 of the Proceedings. A few remarks may be added of the improvement thereupon made. Platinum-iridium (10%) wire of 0.04 mm diameter is used instead of copper wire for the vibrating string. For the sake of symmetry, the platinum-iridium wire of ca. three metres is stretched between two pulleys P, and P, by the equal weights, 20.9 grams each. A specimen to be tested, is tightly clamped by a massive vice of special design, and it is so adjusted that a tiny hook rigidly fixed to its free end just touches the middle point of the wire. The wire is once wound round the hook, so that the vibration of the specimen is necessarily communicated to the wire. The...show more

Product details

  • Paperback | 44 pages
  • 189 x 246 x 2mm | 95g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236915704
  • 9781236915702