Abstract
IN NATURE of April 30, the writer of “Recent Work with Röntgen Rays” has not exactly described the results of our experiments, published in the Rendiconti dell' Accademia dei Lincei. We had formerly found that the sparking distance between two electrodes, in a, shunt-circuit on the discharge of an induction coil, which illuminates a Crookes' tube, is strongly diminished if the Röntgen rays sent from the tube fall upon the positive electrode. The phenomenon is very interesting, as it is the reverse of the phenomenon discovered by Hertz, in which the ultra-violet light acts on the sparking distance in lengthening it, when falling on the negative pole.
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SELLA, A., MAJORANA, Q. On the Action of Röntgen Rays and Ultra-violet Light on Electric Sparks. Nature 54, 53 (1896). https://doi.org/10.1038/054053a0
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DOI: https://doi.org/10.1038/054053a0
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