EntityQ1786419· pop 8· linked from 17 articlesKramers theoremSign in to savetheorem in quantum mechanics that energy levels with half-integer spin are degenerateConnectionsdegenerate energy levelEntityspinEntityHans KramersEntityT-symmetryEntityhydrogenEntityquantum mechanicsEntityelectronEntityInternational Standard Book NumberEntityprotonEntityneutronEntitymagnetic fieldEntityelectric fieldEntitydigital object identifierEntityEugene WignerEntityfermionEntitydeuteriumEntityangular momentumEntityOCLC, Inc.EntityQ180686EntitybibcodeEntityCategoriesAtomic physicsTheorems in quantum mechanics