TY - JOUR T1 - Preliminary Research on the Magnetism Developed in Iron Bars by Electrical Currents JF - Proceedings of the Royal Society of London (1854-1905) VL - 7 SP - 488 EP - 490 PY - 1854/01/01/ UR - http://dx.doi.org/10.1098/rspl.1854.0112 M3 - doi:10.1098/rspl.1854.0112 AU - Joule, J. ER -