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 - 89 IS - 611 SP - 344 EP - 360 PY - 1913/11/01/ UR - http://dx.doi.org/10.1098/rspa.1913.0089 M3 - doi:10.1098/rspa.1913.0089 AU - Pring, J. ER -