Who discovered the scattering of which Thomson scattering is just the low energy limit ?
Thomson scattering: Thomson scattering is the elastic scattering of electromagnetic radiation by a free charged particle, as described by classical electromagnetism. Thomson scattering:  It is just the low-energy limit of Compton scattering: the particle kinetic energy and photon frequency do not change as a result of the scattering.
i don't know