Schmidt found a severely red-shifted version of this in 3C273, thereby elucidating the nature of quasars.
The Kayser-Runge formulas were an early empirical derivation of this, and the theoretical decrement of this was studied by Plaskett and Cillie. Schmidt found a severely red-shifted version of this in 3C273, thereby elucidating the nature of quasars. Its analog in helium is found in Wolf-Rayet stars and is named for Pickering. Corresponding to the Fraunhofer lines C, F, G-prime, and h, their usefulness results from a broadening caused by the Stark effect, and they can be seen when electrons drop to the n = 2 energy level, thus placing them between the Paschen and Lyman groups. Derivable from the Rydberg formula, for 10 points, identify this set of four spectral line emissions of the hydrogen atom, located in the visible light spectrum.
The Kayser-Runge formulas were an early empirical derivation of this, and the theoretical decrement of this was studied by Plaskett and Cillie.
Balmer series [or Balmer lines]