Schumann resonance live
What is the Schumann resonance?
The Schumann resonance is the set of standing electromagnetic waves that vibrate in the cavity between the Earth's surface and the ionosphere. Lightning from thunderstorms, about fifty strokes per second worldwide, keeps these waves going at all times. The German physicist Winfried Otto Schumann predicted them in 1952; they were measured a few years later.
The fundamental mode, called F1, oscillates around 7.83 Hz. The next harmonics sit near 14.3 Hz (F2), 20.8 Hz (F3) and 27 Hz (F4). These frequencies are not fixed: they drift by a few tenths of a hertz through the day, the seasons and solar activity, because the height and conductivity of the ionosphere change.
How to read this chart
The number at the top of the page is the latest F1 value measured by the selected station, with its real age. The Area view plots F1 hour by hour: green when the frequency rises above 7.83 Hz, cyan below. The Calendar view shows one square per hour and one row per day, to spot day-night cycles and unusual days. The Power view follows the overall strength of the signal, and the Modes view overlays F1, F2 and F3 on a 0–36 Hz axis.
The 24 h, 7-day, 30-day and 1-year ranges are anchored on the latest available measurement. Zooming with the wheel or by pinching reloads the curve at the finest step that fits on screen, down to one measurement every 2.25 minutes.
Schumann resonance and brain waves
Electroencephalograms sort brain activity into frequency bands: delta (0.5–4 Hz), theta (4–8 Hz), alpha (8–12 Hz), beta (12–30 Hz) and gamma (above 30 Hz). The fundamental mode of the Schumann resonance falls right at the boundary between theta and alpha. This numerical coincidence is often discussed; this site shows it as it is, as reference lines on the chart, without drawing any conclusion about health or well-being.
Where the data comes from
The measurements come from the HeartMath Institute's Global Coherence Monitoring System, a network of magnetometers in California, Lithuania, Alberta (Canada) and New Zealand. Every day the network publishes one spectrogram per station; Ultrastats extracts the frequency of the first three modes every 2.25 minutes, plus the hourly power of the signal. The history goes back to 2019 and is extended every hour. HeartMath publishes its data one to two days late, which the page states plainly under the main figure.
Frequently asked questions
- Is the Schumann resonance rising over time?
- No. The fundamental frequency has oscillated around 7.83 Hz since the first measurements; the observed variations, about ±0.5 Hz, follow the day, the seasons and solar activity, with no underlying trend.
- Why is the latest measurement from yesterday?
- HeartMath publishes a day's spectrogram the next afternoon, and the power values about two days later. Ultrastats shows the real age of each value instead of pretending to be real time.
- Can I reuse these curves?
- The values are extracted from HeartMath's publications, which remain the source to credit. Ultrastats displays no HeartMath image and cites its sources in the footer.