TY - JOUR T1 - The Photo-Electric Behaviour of Iron in the Active and Passive State JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 88 IS - 600 SP - 70 EP - 74 PY - 1913/01/29/ UR - http://dx.doi.org/10.1098/rspa.1913.0007 M3 - doi:10.1098/rspa.1913.0007 AU - Allen, H. ER -