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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 ...
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.
This is a listing of the best-selling video games in the United States annually by units sold since 1980, with sales figures from The NPD Group since 1994. [1] The United States is a very competitive market for video game developers. Games from different developers around the world have entered the annual lists of top ten best-selling games in ...
List of best-selling Nintendo Entertainment System video games; List of best-selling Game Boy video games; List of best-selling Super Nintendo Entertainment System video games
Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221.; The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies.
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The VGChartz Network is a collection of five video game websites: VGChartz, gamrFeed, gamrReview, gamrTV, and gamrConnect. VGChartz sits at the center of the network and is a video game sales tracking website, providing weekly sales figures of console software and hardware by region. The site was launched in June 2005, and is owned by Brett Walton.