TWo Energy States The magnetic fields of the spinning nuclei will align either with Dβ state the external field or against the field v=△E A photon with the right amount of energy can be absorbed a state and cause the spinning proton to > Chapter 13Chapter 13 5 Two Energy States The magnetic fields of the spinning nuclei will align either with the external field, or against the field. A photon with the right amount of energy can be absorbed and cause the spinning proton to flip. =>