The “intrinsic energy” of a particle is well known, it is mcc so what about of the “self energy” of a particle if one want to call it so and the “limit energy” of a particle if one want to call it so? Is the électron has a proper energy? What could be the equation of its "proper energy"? And what could be the equation of its "limit of énergy"? is the electron for example could reach its "limit energy" in the sun?What could be the equation of the "proper energy" of a particle? What coulb the equation of the "limit energy" of a particle? And what could be the equation which could link these three types of energies of a particle?