Abstract
POSITIVE rays of hydrogen were passed through a hole of 2 mm. diameter and 6 mm. long in the centre of a cathode of brass faced with an aluminium plate. A glass window kept perpendicular to the beam, eleven centimetres behind the front face of the cathode, showed formations of deposits with well-defined rings after the tube was worked at different cathode falls corresponding to a maximum of 25,000 volts D.C, current 1·7 m. amp. The total time of exposure was about twenty-five hours. On examination by transmitted light of the place where the rays fell directly, it was found to be transparent. The rings were brown. The first ring is sharp and circular, with a thickness of 0·5 mm. and a diameter of 8 mm. The second ring is also quite circular, of the same thickness as the first, but not quite concentric with it. The diameter of this ring is about 16 mm. only; two-fifths of the third ring is visible, the diameter is 24–30 mm., but it is nearly concentric with the second ring.
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Phys. Z., 34, 492; 1933.
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DASANNACHARYA, B., CHIPLONKAR, V. & SAPRE, L. Ring Deposits on Glass by Positive Ray Bombardment. Nature 136, 642 (1935). https://doi.org/10.1038/136642b0
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DOI: https://doi.org/10.1038/136642b0
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