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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.
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 ...
Current events; Random article; ... (Ogg Theora video file, length 24 s, ... Animation of Schumann resonance in Earth's atmosphere. Date: 11 January 2012:
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.
the Schumann–Runge bands between 176 and 192.6 nanometres (named for Victor Schumann and Carl Runge); the Herzberg bands between 240 and 260 nanometres (named after Gerhard Herzberg ); the atmospheric bands between 538 and 771 nanometres in the visible spectrum; including the oxygen δ (~580 nm), γ (~629 nm), B (~688 nm), and A-band (~759 ...
He describes how the comb is mass manufactured, details the spring, gears and governor that drive the box, and shares some history of early music boxes. Outtakes are included at the end of the video. Čeština: Jak funguje music box - krátký naučný film z roku 2015 natočený Billem Hammackem vysvětlující princip funkce hrací skříňky ...
Video Music Box is an American music television program. The series is the first to feature hip hop videos primarily, [3] [4] and was created in 1983 by Ralph McDaniels and Lionel C. Martin, who also serve as the series' hosts. [1] It aired on the New York City-owned public television station WNYC-TV (now WPXN-TV) from 1984 to 1996.
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