On the Velocity of the Cathode Particles Emitted by Various Metals under the Influence of Rontgen Rays, and Its Bearing on the Theory of Atomic Disintegration . 1907.] Cathode Particles emitted by Various Metals. A57 It is apparent from plates a and b that the velocity of the particles isindependent of the intensity of the rays, while c shows how the velocityvaries with increasing hardness. The plates were confirmed in each case byothers taken under similar circumstances. It is at once apparent that the velocities obtained with gold are practicallyidentical with those in the case of platinum,
On the Velocity of the Cathode Particles Emitted by Various Metals under the Influence of Rontgen Rays, and Its Bearing on the Theory of Atomic Disintegration . 1907.] Cathode Particles emitted by Various Metals. A57 It is apparent from plates a and b that the velocity of the particles isindependent of the intensity of the rays, while c shows how the velocityvaries with increasing hardness. The plates were confirmed in each case byothers taken under similar circumstances. It is at once apparent that the velocities obtained with gold are practicallyidentical with those in the case of platinum, which is what we should expect-if it depends on the atomic weight. The same remarks apply to the slowestvelocities as did formerly to those of platinum. Discussion of the Results and Conclusions. It will be of advantage to compare the velocities obtained with those gotby Dorn, in his earlier work. He found velocities varying from 5*3 x 109 to8*5 x 109, on the assumption that efm had a value of 1*865 x 107. As thevalue of efm here used is 1*7 x 107, we must reduce his results by practically9 per cent. This would give values of about 4*9 x 109 to 7*8 x 109
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