A primitive cell that spans an entire Bravais lattice is named for him ? and Seitz.
This man's namesake effect results in alteration of properties in crystals due to dislocation of atoms via radiation.  His distribution function is the quantum analogue of the Boltzman distribution function. This man is the partial namesake of a distribution which is analogous to the Cauchy-Lorentz distribution, and which gives the cross section of neutron scattering as a function of energy. In addition to a formula with Breit, he co-names a theorem which implies that matrix operators can be factorized as a product of Clebsch-Gordan coefficients and the reduced matrix element along with Eckart. A primitive cell that spans an entire Bravais lattice is named for him ? and Seitz. The coupling of angular momenta in higher dimensions requires the use of his symbols. For 10 points, identify this physicist whose thought experiment involves a being who performs an observation on Schrodinger's cat and is called his namesake "friend." 
This man's namesake effect results in alteration of properties in crystals due to dislocation of atoms via radiation.  
Eugene {Wigner}