1952

Predicted on paper

f_n = (c / 2πa) · √n(n+1)

Perfect shell, n = 1: 10.6 Hz · the real, leaky shell: 7.83 Hz

Winfried Otto Schumann · physicist, Munich

Zeitschrift für Naturforschung A · Vol. 7 · 1952

Über die strahlungslosen Eigenschwingungen einer leitenden Kugel, die von einer Luftschicht und einer Ionosphärenhülle umgeben ist

"On the free oscillations of a conducting sphere surrounded by an air layer and an ionosphere shell"

W. O. Schumann, 1888 to 1974

NatureVol. 188 · No. 4751 · 19 November 1960

Observations of Earth to Ionosphere Cavity Resonances

M. Balser and C. A. Wagner · pages 638 to 641

The first clear measurement: peaks near 8, 14, 20, 26 and 32 cycles per second.

Lesson 1 of 12 · done

Earth's Heartbeat

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Founding price · $19 for all 12 lessons, one timeLesson 1 free · 11 more, each revealed as it opens

The math, in one line

ring estimate: c / 2πa = 7.5 Hz · perfect sphere: × √2 = 10.6 Hz · measured: 7.83 Hz (the ceiling leaks)

Sources

NASA SVS 10891: about 2,000 storms, about 50 flashes per second, waves trapped under the ionosphere.
W. O. Schumann, Zeitschrift für Naturforschung A 7, 149 to 154 (1952).
M. Balser and C. A. Wagner, Nature 188, 638 to 641 (1960).
Ionosphere D region 60 to 90 km; ISS orbit about 400 km (NASA).
Lightning map: NASA LIS/OTD climatology 1995 to 2013. Flare: NOAA GOES 15, 7 March 2012.
Live reading: ResonanceOne pipeline (Tomsk station), hourly.

Myth check

7.83 Hz is a property of the planet's cavity, not a signal "sent" to anyone. Whether it has any effect on people is an open research question, and this course makes no health claims. Lesson 10 looks at what the studies actually found.

ResonanceOne Course

Earth's Heartbeat

How lightning, the ionosphere and the Sun make our planet ring. Lesson 1 of 12, about 4 minutes with three moments to explore.

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