This scientist and Walther Ritz name a “combination principle” that generalizes an equation developed by this scientist. Serge Haroche (“ah-ROSH”) used highly excited states named for this scientist to study photons trapped in an optical cavity. Using a reduced mass term allows for a constant named for this scientist to account for finite masses. This scientist’s namesake constant is equal to the fine structure constant (10[1])over 4 pi (-5[1])times the Bohr radius and is usually subscripted infinity. An exotic atom that could theoretically hold many atoms within it is this (10[1])scientist’s namesake polaron. An equation named for this scientist is used to derive the Lyman and Balmer spectral series for hydrogen. For 10 points, what Swedish physicist names a formula for emissions from electronic transitions in an atom? (10[1])■END■ (0[1])