TY - JOUR T1 - On the Photo-Electric Discharge from Metallic Surfaces in Different Gases JF - Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Math. or Phys. Character (1896-1934) VL - 202 SP - 439 EP - 458 PY - 1904/01/01/ UR - http://dx.doi.org/10.1098/rsta.1904.0010 M3 - doi:10.1098/rsta.1904.0010 AU - Varley, W. ER -