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Schumann resonance.A moment, saved.
A dated observation, kept just as it was shared. See the source, read the chart and explore what came before.
4.6 A1
First-mode amplitude 20 Oct 2026 · 23:55 UTC
This is a local station observation in relative source units. A larger amplitude does not mean that the resonance frequency has become that number.
Captured 21 Oct 2026, 13:29 UTC. This shared view stays as captured; later source revisions may differ.
Relative amplitude 20 Oct 2026
✓ Previous day0 34.5 68.9 00:00 06:00 12:00 18:00 24:00 0 34.5 68.9 00:00 06:00 12:00 18:00 24:00 Gaps = no observation
Observed maximum
68.9relative units Compared with previous day
+5.4 relative units 288 matched observations · mean difference First-mode frequency
7.9Hz 23:55 UTC · separate observation Station observations · Tomsk observatory ↗
Relative source units, not pT. Amplitude is not frequency.
First-mode amplitude describes the strength of a signal at one station. Frequency describes where the resonance peak sits; it is a different measurement.
Read the chart guide ↗ View observations as a table A moment worth keeping Send a little perspective. Share this dated observation. The chart and numbers stay with the link, even after today moves on.
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Schumann Pulse for iPhone A little context. Keep observations close, choose activity alerts and build a journal of your own day. Explore comparisons as your history grows.
Read the signal with confidence. Different stations. Different measurements. Schumann resonances are electromagnetic resonances of the Earth–ionosphere cavity, mainly excited by lightning. A station measures a local signal shaped by global activity, propagation, local interference and its instruments.
Amplitude describes signal strength. Frequency, measured in hertz, describes the position of a resonance peak. The often-quoted 7.83 Hz is an approximate reference for the first mode, not a live reading or a fixed number for every moment. Different instruments and source units mean the stations’ amplitudes should not be combined into a global score.
For Tomsk, we draw original charts from subscribed numeric observations, using five-minute averages of samples around each timestamp. Times are converted to UTC. The comparison uses matching times on both days; missing observations remain gaps. A reading more than 90 minutes old is marked delayed. Etna provides an attributed source spectrogram; Nagycenk’s display is linked at the observatory. Neither has a numerical feed connected here yet.
Understand the frequencies ↗ · Our source standards
Schumann Pulse for iPhone