Becquerel effect

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The Becquerel effect was discovered by Alexandre Edmond Becquerel in 1839 . If two identical electrodes are immersed in an electrolyte and only one exposed, a voltage (polarization) occurs between them . Violet and ultraviolet light are particularly effective (especially pronounced with selenium electrodes and with oxidized, chlorinated and iodinated electrodes). The potential difference, which is generally a few microvolts, can reverse its sign in the course of exposure .

literature

  • J. Schubert: Physical Effects. Physik-Verlag, 2nd edition, 1984, ISBN 3-876-64082-2 , p. 8.