TY - JOUR T1 - On the Emission Velocities of Photo-Electrons JF - Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Math. or Phys. Character (1896-1934) VL - 212 SP - 205 EP - 226 PY - 1913/01/01/ UR - http://dx.doi.org/10.1098/rsta.1913.0007 M3 - doi:10.1098/rsta.1913.0007 AU - Hughes, A. ER -