TY - JOUR T1 - On the Electric Conductivity of Commercial Copper of Various Kinds JF - Proceedings of the Royal Society of London (1854-1905) VL - 8 SP - 550 EP - 555 PY - 1856/01/01/ UR - http://dx.doi.org/10.1098/rspl.1856.0145 M3 - doi:10.1098/rspl.1856.0145 AU - Thomson, W. ER -