单词 | Dirac moment |
释义 | Dirac moment [di`rak `mō·mǝnt] QUANTUM MECHANICS Magnetic moment of the electron according to the Dirac theory, equal to eℏ / 2mc, where e and m are the charge and mass of the positron respectively, ℏ is Planck's constant divided by 2π, and c is the speed of light. |
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