TY - JOUR T1 - On the Velocity of the Cathode Rays Ejected by Substances Exposed to the $ \gamma $-Rays of Radium JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 82 IS - 552 SP - 128 EP - 145 PY - 1909/03/10/ UR - http://dx.doi.org/10.1098/rspa.1909.0012 M3 - doi:10.1098/rspa.1909.0012 AU - Kleeman, R. ER -