TY - JOUR T1 - On a New Standard of Illumination and the Measurement of Light JF - Proceedings of the Royal Society of London (1854-1905) VL - 36 SP - 270 EP - 275 PY - 1883/01/01/ UR - http://dx.doi.org/10.1098/rspl.1883.0109 M3 - doi:10.1098/rspl.1883.0109 AU - Preece, W. ER -