Abstract:
The quasi-relativistic equations are derived from nonrelativistic equations bringing amendments in them. They comprise of
the continuity equations, and the conservation laws for impulses and energies both for protons and for electrons. It is so because
the hydrodynamic and electric forces acting on them are similar, so, their impulses are also similar. The rife proton velocity in
solar corona is $500$ km/s and the consistent electron velocity for such impulse is $0.953$ c, hence, the electrons must be taken into
account and they are relativistic. Expressions for the collisional terms are also adapted to relativistic velocities. Heat emitting to
warm protons due to friction between electron and proton flows is sufficient to heat plasma. Concentration $n_e$=$10^{10}$ cm$^{-3}$ and
amount of scattering energy compensate large free path time.
Keywords:plasma, solar corona, relativistic effects.
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