TY - JOUR T1 - The Periodogram and Its Optical Analogy JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 77 IS - 515 SP - 136 EP - 140 PY - 1906/02/08/ UR - http://dx.doi.org/10.1098/rspa.1906.0011 M3 - doi:10.1098/rspa.1906.0011 AU - Schuster, A. ER -