Answer to Question #33069 in Atomic and Nuclear Physics for sachi
What are the similarities between (nn) & (pp) forces?
The nuclear force between two nucleons is charge independent. By this we mean that the strong interaction between two protons or two neutrons or a neutron and a proton is the same. (Of course, there will be differing electromagnetic forces in these cases). Evidence for the charge independence of nuclear forces can be found in nucleon-nucleon scattering and in the binding energies of light mirror nuclei.
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