TY - JOUR T1 - Preliminary Note on the Reproduction of Diffraction-Gratings by Means of Photography JF - Proceedings of the Royal Society of London (1854-1905) VL - 20 SP - 414 EP - 417 PY - 1871/01/01/ UR - http://dx.doi.org/10.1098/rspl.1871.0077 M3 - doi:10.1098/rspl.1871.0077 AU - Strutt, J. ER -