Degeneracy pressure for non-relativistic electrons is given as p~1/((d^2)(Me)) where d is the mean inter electron distance and Me is electron mass, a similar equation is given for neutron degeneracy pressure p~1/((d^2)(Mn)). A particle is non-relativistic when T*>Mx where T=temperature and Mx is the particles mass. What I'm wondering is: does anyone have of a good reason for all Fermions degeneracy pressures not to be represented by the general equation p~1/((d^2)(Mf))? Barring situations where d^2 is sufficient to cause Mf to no longer exist, of course (as in the situation in neutron stars, where the electrons are absorbed into the protons: e+p=n+v). ------------------ Este est percepi - to be is to be perceived. Please Register or Log in to view the hidden image! -R.