TY - JOUR T1 - On the Shapes of the Equipotential Surfaces in the Air Near Long Walls or Buildings and on Their Effect on the Measurement of Atmospheric Potential Gradients JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 91 IS - 631 SP - 440 EP - 451 PY - 1915/07/01/ UR - http://dx.doi.org/10.1098/rspa.1915.0035 M3 - doi:10.1098/rspa.1915.0035 AU - Lees, C. ER -