A Text-Book of Physics; Properties of Matter


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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 Excerpt: ...equal spheres was proved by Hertz to be equal to V 8(-u)q where R is the radius of either of the spheres, s the density of the sphere, q and r respectively Young's modulus and Poisson's ratio for the substance of which the spheres are made. Hamburger has measured the time two spheres are in contact by making the ...