1. He remained largely self-taught, studying general relativity, quantum mechanics, and atomic physics . 2. His main interests are atomic physics , condensed matter physics and many-body physics. 3. He also collaborated with the International Institute of Atomic Physics in Geneva. 4. Randall oversaw Michigan s substantial growth in atomic physics and nuclear physics. 5. Examples include nuclear and atomic physics , biophysics, social physics, and stellar physics. 6. Siegbahn's precision measurements drove many developments in quantum theory and atomic physics . 7. X-rays quickly became the most powerful tool for the development of atomic physics , 8. Concurrently, advances in atomic physics stimulated investigations in stable isotope geochemistry. 9. The de Broglie hypothesis helped resolve outstanding issues in atomic physics . 10. He came at a time when atomic physics was going in new directions,
