This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Language-neutral, labels just "Bohr" and "Dirac"; swapped 2p-subscripts. The original can be viewed here: Fine structure of Ly-alpha.svg: . Modifications made by Pieter Kuiper.
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{{Information |Description={{en|Fine structure of atomic hydrogen : the Ly-α line.}} {{fr|Structure fine de l'hydrogène atomique : la raie Ly-α.}} {{de