Millikan, Robert Andrews, Gale, Henry Gordon · Boston : Ginn and Co. · leaf 504
ich may reach the stupendous value of 100,000 miles per second. 499. X rays. It was in 1895 that Rontgen (see oppositep. 446) first discovered that wherever the cathode rays im-pinge upon tlie walls of a tube, or upon any obstacles placedinside the tube, they give rise to another type of… … FiG. 475. An X-ray bulb get for the cathode rays, which, being emitted at right anglesto the concave surface of the cathode C, come to a focus ata point on the surface of this plate. This is the point at whichthe X rays are generated and from which they radiate in alldirections. The target P is…
Physics
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