TY - JOUR T1 - On Pressure Perpendicular to the Shear Planes in Finite Pure Shears, and on the Lengthening of Loaded Wires When Twisted JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 82 IS - 557 SP - 546 EP - 559 PY - 1909/07/31/ UR - http://dx.doi.org/10.1098/rspa.1909.0059 M3 - doi:10.1098/rspa.1909.0059 AU - Poynting, J. ER -