What is "brillouin"

Brillouin could refer to:

• Marcel Brillouin (1854–1948), a French physicist
• His son Léon Brillouin (1889–1969), also a physicist
  • Things named after him:
    • The Brillouin function, a function that describes the magnetization of an ideal paramagnet
    • Brillouin scattering, the scattering of light by density variations in a material
    • Brillouin zone, a primitive cell of the reciprocal lattice of a crystal