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  2. Schumann resonances - Wikipedia

    en.wikipedia.org/wiki/Schumann_resonances

    The global electromagnetic resonance phenomenon is named after physicist Winfried Otto Schumann who predicted it mathematically in 1952. Schumann resonances are the principal background in the part of the electromagnetic spectrum [2] from 3 Hz through 60 Hz [3] and appear as distinct peaks at extremely low frequencies around 7.83 Hz (fundamental), 14.3, 20.8, 27.3, and 33.8 Hz.

  3. File:Schumann resonance animation.ogv - Wikipedia

    en.wikipedia.org/wiki/File:Schumann_resonance...

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  4. Extremely low frequency - Wikipedia

    en.wikipedia.org/wiki/Extremely_low_frequency

    The fundamental Schumann resonance is at approximately 7.83 Hz, the frequency at which the wavelength equals the circumference of the Earth, and higher harmonics occur at 14.1, 20.3, 26.4, and 32.4 Hz, etc. Lightning strikes excite these resonances, causing the Earth–ionosphere cavity to "ring" like a bell, resulting in a peak in the noise ...

  5. Winfried Otto Schumann - Wikipedia

    en.wikipedia.org/wiki/Winfried_Otto_Schumann

    Winfried Otto Schumann (May 20, 1888 – September 22, 1974) was a German physicist and electrical engineer who predicted the Schumann resonances, a series of low-frequency resonances caused by lightning discharges in the atmosphere.

  6. Absorption band - Wikipedia

    en.wikipedia.org/wiki/Absorption_band

    In spectroscopy, an absorption band is a range of wavelengths, frequencies or energies in the electromagnetic spectrum that are characteristic of a particular transition from initial to final state in a substance. According to quantum mechanics, atoms and molecules can only hold certain defined quantities of energy, or exist in specific states. [1]

  7. Talk:Schumann resonances/Archive 1 - Wikipedia

    en.wikipedia.org/wiki/Talk:Schumann_resonances/...

    6 Fundamental (First) Schumann Resonance Frequency Incorrectly Given as 7.86Hz now Corrected 2 comments 7 Section Schumann resonance in other planets in not updated

  8. File:Schumann resonance (EN) color changed.svg - Wikipedia

    en.wikipedia.org/wiki/File:Schumann_resonance...

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  9. Talk:Schumann resonances - Wikipedia

    en.wikipedia.org/wiki/Talk:Schumann_resonances

    Those frequencies vary with sea level, weather, and solar activity. In other words: that 14.x Hz frequency is not a constant. tgeorgescu 22:02, 19 March 2024 (UTC) The Montinel source says: "The average fundamental mode of resonance is around 7.8 Hz, and the rest of modes are 14, 20, 26, 33, 39, and 45 Hz with slight diurnal variation."