One equation named for this man uses the Stosszahl Ansatz for the collision term and can be used to describe the thermalization of the CMB due to Compton scattering; that equation is also known as the radiative transport equation. The BGK collision operator is used with a lattice model named for this man to solve the incompressible Navier-Stokes equations. This man co-names a (*) distribution function for energy between identical but distinguishable particles along with the namesake of four equations characterizing the electromagnetic force, Maxwell, and also co-names 
One equation named for this man uses the Stosszahl Ansatz for the collision term and can be used to describe the thermalization of the CMB due to Compton scattering; that equation is also known as the radiative transport equation. The BGK collision operator is used with a lattice model named for this man to solve the incompressible Navier-Stokes equations. This man co-names a (*) distribution function for energy between identical but distinguishable particles along with the namesake of four equations characterizing the electromagnetic force, Maxwell, and also co-names a radiation law with T to the fourth dependence. For 10 points, identify this man who names a law governing blackbody radiation with Stefan.
One equation named for this man uses the Stosszahl Ansatz for the collision term and can be used to describe the thermalization of the CMB due to Compton scattering; that equation is also known as the radiative transport equation.
Ludwig Eduard {Boltzmann}