The Gell-Mann–Nishijima formula was proposed by an American physicist who received a Nobel Prize in what year?
Gell-Mann–Nishijima formula The Gell-Mann–Nishijima formula (sometimes known as the NNG formula) relates the baryon number "B", the strangeness "S", the isospin "I" of quarks and hadrons to the electric charge "Q". It was originally given by Kazuhiko Nishijima and Tadao Nakano in 1953, and led to the proposal of strangeness as a concept, which Nishijima originally called "eta-charge" after the eta meson. Murray Gell-Mann proposed the formula independently in 1956. The modern version of the formula relates all flavour quantum numbers (isospin up and down, strangeness, charm, bottomness, and topness) with the baryon number and the electric charge.
Eyvind Wichmann Eyvind Hugo Wichmann (born May 30, 1928 in Stockholm) is an American theoretical physicist.