This scientist is the first alphabetical namesake of a dispersion formula that calculates the cross-section for a photon scattering by an atomic electron. With Euler, this scientist is the namesake of a Lagrangian that describes photon-photon scattering in QED. Coherent states that saturate one of this scientist’s namesake statements are “squeezed.” State vectors are (*) time-independent, while operators evolve over time in this scientist’s namesake “picture” of quantum mechanics. Sigma sub p times sigma sub x is greater than or equal to h-bar over 2 according to this scientist’s namesake statement, which states that position and momentum cannot be simultaneously known. For 10 points, name this German scientist, who formulated a namesake uncertainty principle. (10[1])■END■