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Originally Posted by dleviwing You may wish to rethink this concept or give reference to what leads you to believe it. |
The sum of the squares of the spin for each particle. If you accept with the idea of spin in quantum mechanics then it is stipulated that the neutrinos ar spin-1/2 fermions and the photon are spin-1 bosons. Add 4 squares of 1/2 give the square of 1.