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The High-frequency Active Auroral Research Program ( HAARP) is a University of Alaska Fairbanks program which researches the ionosphere – the highest, ionized part of Earth's atmosphere . The most prominent instrument at HAARP is the Ionospheric Research Instrument (IRI), a high-power radio frequency transmitter facility operating in the high ...
0 ( zero) is a number representing an empty quantity. Adding 0 to any number leaves that number unchanged. In mathematical terminology, 0 is the additive identity of the integers, rational numbers, real numbers, and complex numbers, as well as other algebraic structures.
The University of Oxford is a collegiate research university in Oxford, England. There is evidence of teaching as early as 1096, [2] making it the oldest university in the English-speaking world and the world's second-oldest university in continuous operation. [2] [11] [12] It grew rapidly from 1167, when Henry II banned English students from ...
Portugal, [e] officially the Portuguese Republic, [f] is a country located on the Iberian Peninsula, in Southwestern Europe, and whose territory also includes the Macaronesian archipelagos of the Azores and Madeira. It features the westernmost point in continental Europe, its mainland west and south border with the North Atlantic Ocean and in ...
The standard deviation σ of X is defined as which can be shown to equal. Using words, the standard deviation is the square root of the variance of X . The standard deviation of a probability distribution is the same as that of a random variable having that distribution. Not all random variables have a standard deviation.
1954 (current version, per 4 U.S.C. §4) [4] "I pledge allegiance to the Flag of the United States of America, and to the Republic for which it stands, one nation under God, indivisible, with liberty and justice for all." Schoolchildren in 1899 reciting the Pledge of Allegiance. The Pledge of Allegiance is a patriotic recited verse that ...
Chainsaw Man (Japanese: チェンソーマン, Hepburn: Chensō Man) is a Japanese manga series written and illustrated by Tatsuki Fujimoto.Its first arc was serialized in Shueisha's shōnen manga magazine Weekly Shōnen Jump from December 2018 to December 2020; its second arc began serialization in Shueisha's Shōnen Jump+ app and website in July 2022.
In Tetris, a game named for the Greek word for 4, every shape in the game is formed of 4 blocks each. 4 represents the number of Justices on the Supreme Court of the United States necessary to grant a writ of certiorari (i.e., agree to hear a case; it is one less than the number necessary to render a majority decision) at the court's current size.