Magnet Academy: Sin Itiro Tomonaga

Japanese theoretical physicist Sin-Itiro Tomonaga resolved key problems with the theory of quantum electrodynamics (QED) developed by Paul Dirac in the late 1920s through the use of a mathematical technique he referred to as renormalization. Tomonaga's work refined QED in order to make it consistent with the theory of special relativity and to show that the theory agrees quantitatively with results obtained experimentally to a great degree of accuracy. In 1965, Tomonaga received a portion of the Nobel Prize in Physics for his contributions to quantum electrodynamics.