Robson, B ASutanto, S2015-12-100020-7748http://hdl.handle.net/1885/65580The transition probabilities for the components of both the Balmer and Lyman α-lines of hydrogenic atoms are calculated for the nonrelativistic Schrödinger theory, the Dirac theory, and the recently developed eight-component (8-C) formalism. For large Z20012015-12-10