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The Röntgen Rays or X-Rays

المؤلف:  GEORGE A. HOADLEY

المصدر:  ESSENTIALS OF PHYSICS

الجزء والصفحة:  P-513

2025-12-23

544

Certain luminous tubes, when the secondary current from an induction coil is passed through them, sendoff rays that make fluorescent substances glow and affect the photographic plate. These rays have, moreover, the property of passing through many opaque substances as rays of light pass-through trans- parent substances. They proceed from that part of the sur- face of the tube upon which the cathode rays strike, and were called by Professor Röntgen, of Würzburg, their discoverer, the X-rays. Unlike the cathode rays, they are not affected by a magnetic field. Unlike light waves, they are not re- fracted by lenses nor reflected by mirrors. They may per- haps best be described as irregular pulses set up in the ether as a result of the impact of the cathode rays upon the side of the tube.