Alpha centauri system

a star system comprising the binary star Alpha Centauri A and B and Proxima Centauri (also called Alpha Centauri C), which is 0.1 light years closer to the sun. Visual magnitude: 0.01 (A), 1.33 (B); spectral type: G2V (A); distance from earth: 4.3 light years Also called Rigil Kent See also Proxima

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  • Alpha conversion

    alpha conversion theory In lambda-calculus and reduction, the renaming of a formal parameter in a lambda abstraction. This does not change the meaning of the abstraction. For example: \ x . x+1 \ y . y+1 If the actual argument to a lambda abstraction contains instances of the abstraction’s formal parameter then it is necessary […]

  • Alpha decay

    a radioactive process in which an alpha particle is emitted from the nucleus of an atom, decreasing its atomic number by two. noun the radioactive decay process resulting in emission of alpha particles alpha decay The radioactive decay of an atomic nucleus by emission of an alpha particle (two protons bound to two neutrons). When […]

  • Alpha emitter

    noun a radioactive isotope that emits alpha particles Historical Examples One such reaction uses alpha particles emitted by polonium-210 (or some other alpha emitter) to bombard the element beryllium. The Atomic Fingerprint Bernard Keisch

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  • Alpha female

    noun the dominant female animal in a pack Examples The pack deferred to the alpha female. See alpha girl Word Origin fr alpha male Contemporary Examples ReasonTV interviews Kay Hymowitz about why the “alpha female” does not exist on a large scale in America. The Alpha Female’s Dilemma Ilana Glazer February 4, 2013 Most packs […]

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