The n-Rays

Abstract

IN trying to repeat Blondlot's experiments I have met with the usual lack of success, but one experiment I have made seems worthy of record. A small quantity of radium salt was accidentally spilled upon a barium platinocyanide screen, which consequently became faintly luminous in the dark. The light was very faint, and in order to see it more clearly I placed the screen nearly in contact with the eye. On touching the back of the screen with the finger, just under the luminous patch, there was seen to be a perceptible alteration in intensity of the light.