TY - JOUR T1 - The Origin of Thermal Ionisation from Carbon JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 90 IS - 617 SP - 174 EP - 179 PY - 1914/05/01/ UR - http://dx.doi.org/10.1098/rspa.1914.0041 M3 - doi:10.1098/rspa.1914.0041 AU - Richardson, O. ER -