The story
Named after the physicist Winfried Otto Schumann, who predicted them mathematically in 1952.
Etymology from Wiktionary, CC BY-SA 4.0.
Schumann resonance
Today it means: Any of a set of spectrum peaks in the extremely low-frequency (ELF) portion of the Earth's electromagnetic field spectrum, generated and excited by lightning discharges in the cavity formed by the Earth's surface and the ionosphere. Full definition →