TY - JOUR T1 - On the Modulus of Torsional Rigidity of Quartz Fibres and Its Temperature Coefficient. JF - Proceedings of the Royal Society of London (1854-1905) VL - 74 SP - 401 EP - 402 PY - 1904/01/01/ UR - http://dx.doi.org/10.1098/rspl.1904.0135 M3 - doi:10.1098/rspl.1904.0135 AU - Horton, F. ER -