Dynamics During Spectroscopic Transitions

"How does a photon get into an atom?" This question puzzled not only leading scientists, e.g. Schrödinger and Heisenberg. It is still asked by students. And it is, indeed, a key question of quantum mechanics.
James D. Macomber''s book was the first to provide a didactic and unified approach to the answer. It has been updated with recent experimental results and modern theoretical interpretations, i...