Schumann Resonances

The Earth-ionosphere cavity ringing at extremely low frequency, pumped continuously by lightning.

Core Principles & Analysis

• Winfried Otto Schumann predicted the resonances in 1952; measurements confirmed them within a decade.
• The fundamental sits near 7.83 Hz with overtones roughly every 6.5 Hz.
• Their intensity tracks global thunderstorm activity, making them a lightning and climate research signal.

Specifications & Metrics

• FREQUENCY: 7.83 Hz fundamental