Here ρ H as in (44). Moreover, we looked at a bundle identical neutrons where t = r/v, with r a position variable and v neutron velocity from v = 1.383 × 10 4 × √ E, with E the energy of the neutron in electron volts. In terms of Dirac equation and classical physics, the present work continues my own previous work . Here the,m n = 1.674928 × 10 -27 kg, in a.u. m n ≈ 1.008665, is the mass of the neutron, c = 2.99 × 10 8 m/s, the velocity of light in vacuum and, ℏ = 1.0546 × 10 -34 Js, Planck's constant. Later on we will need Boltzmann's constant k B = 1.383 × 10 -23 J/K, mass of the proton in a.u. m p = 1.007825 and mass of the deuteron in a.u. m D = 2.0135532. We assume that a similar to (45) expression holds for the proton.