TY - JOUR T1 - On Phenomena Relating to the Spectra of Hydrogen and Helium JF - Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Math. or Phys. Character (1896-1934) VL - 217 SP - 237 EP - 278 PY - 1918/01/01/ UR - http://dx.doi.org/10.1098/rsta.1918.0007 M3 - doi:10.1098/rsta.1918.0007 AU - Merton, T. AU - Nicholson, J. ER -