TY - JOUR T1 - On a Cause of Error in Electroscopic Experiments JF - Proceedings of the Royal Society of London (1854-1905) VL - 18 SP - 330 EP - 333 PY - 1869/01/01/ UR - http://dx.doi.org/10.1098/rspl.1869.0072 M3 - doi:10.1098/rspl.1869.0072 AU - Wheatstone, C. ER -