130. 1955 – Ionel Solomon develops the first nuclear magnetic resonance theory
of magnetic dipole coupled nuclear spins and of the Nuclear Overhauser Effect.
131. 1955 and 1956 – Murray Gell-Mann and Kazuhiko Nishijima independently derive
the Gell-Mann–Nishijima formula, which relates the baryon number, the strangeness, and
theisospin of hadrons to the charge, eventually leading to the systematic categorization
of hadrons and, ultimately, the Quark Model of hadron composition.
132. 1956 – P. Kuroda predicts that self-sustaining nuclear chain reactions should
occur in natural uranium deposits.
133. 1956 – Chien-Shiung Wu carries out the Wu Experiment, which observes parity
violation in cobalt-60 decay, showing that parity violation is present in the weak
interaction.
134. 1956 – Clyde L. Cowan and Frederick Reines experimentally prove the existence
of the neutrino.
130. 1955 – Ionel Solomon develops the first nuclear magnetic resonance theoryof magnetic dipole coupled nuclear spins and of the Nuclear Overhauser Effect.131. 1955 and 1956 – Murray Gell-Mann and Kazuhiko Nishijima independently derivethe Gell-Mann–Nishijima formula, which relates the baryon number, the strangeness, andtheisospin of hadrons to the charge, eventually leading to the systematic categorizationof hadrons and, ultimately, the Quark Model of hadron composition.132. 1956 – P. Kuroda predicts that self-sustaining nuclear chain reactions shouldoccur in natural uranium deposits.133. 1956 – Chien-Shiung Wu carries out the Wu Experiment, which observes parityviolation in cobalt-60 decay, showing that parity violation is present in the weakinteraction.134. 1956 – Clyde L. Cowan and Frederick Reines experimentally prove the existenceof the neutrino.
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