The story
Named after the Harvard physicist Theodore Lyman IV, who in 1906 discovered the first line in the spectrum.
Etymology from Wiktionary, CC BY-SA 4.0.
Lyman series
Today it means: A hydrogen spectral series of transitions and resulting ultraviolet emission lines of the hydrogen atom as an electron goes from n ≥ 2 to n = 1 (where n is the principal quantum number), the lowest energy level of the electron. Full definition →