Published online by Cambridge University Press: 24 October 2008
It has been known for a very long time that, under certain conditions rather difficult to specify, the discharge through an ordinary two-electrode vacuum tube containing gas at a low pressure, even when the potential is maintained by a battery of low resistance Storage cells, is intermittent.
* See e.g. Cantar, M., Wied. Annal. 67, 2 (1899)Google Scholar, and Bieche, , Ann. d. Phys. 4, p. 614 (1901).Google Scholar
† Proc. Boy. Soc. 98 (1920).Google Scholar
* Simultaneous photographs in the mirror of a mercury are fed with A.C. of known frequency are seen on the right of Fig. 2 and in the centre of Fig. 1.
† Occasionally there is evidence of flashes travelling from the cathode.
* Radio Review, 1919.Google Scholar