Mach

Mach
Ernst, Austrian scientist, 1838–1916. See M. band, M. number.
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machine activity [UMLS]; Mortality Assessment in Congestive Heart Failure [study]

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Mach 'mäk n a usu. high speed expressed by a Mach number <an airplane flying at \Mach 2>
Mach 'mäk Ernst (1838-1916)
Austrian physicist and philosopher. Mach established the basic principles of scientific positivism. In the 1870s he made classic studies on the perception of bodily rotation. Mach was also a pioneer in the study of supersonic projectiles and jets. In 1887 he described in a paper on projectiles in flight the angle between the axis of the projectile and the envelope of the waves produced. This angle forms the basis for the Mach number.

Medical dictionary. 2011.

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  • mach — mach …   Dictionnaire des rimes

  • MACH (E.) — Physicien préoccupé en même temps de la critique historique des concepts physiques et des phénomènes de psychophysiologie des sensations, Mach a fourni une œuvre scientifique importante à la jonction de plusieurs disciplines, mais souvent mal… …   Encyclopédie Universelle

  • Mach — [ mak ] n. pr. • v. 1950; nom d un physicien autrichien ♦ Aéronaut. Nombre de Mach : rapport entre la vitesse d un mobile et celle du son se propageant dans le même milieu. Ellipt Voler à Mach 2, à Mach 3, à 2, 3 fois la vitesse du son (⇒… …   Encyclopédie Universelle

  • Mach — ist der Familienname folgender Personen: Alexander Mach (1902–1980), slowakischer Journalist und Politiker, Hauptorganisator der Deportation slowakischer Juden Edmund Mach (Chemiker) (1846–1901), österreichischer Agrarchemiker und Önologe Edmund… …   Deutsch Wikipedia

  • Mach — may refer to:* Mach number, a measure of speed * Gillette Mach3, a manual razor with three blades * Mach bands, an optical illusion * Muscarinic acetylcholine receptor, abbreviated mACh In computers* ATI Mach, a 2D GPU chip by ATI * Mach II, an… …   Wikipedia

  • Mach 1 —    , MACH NUMBER    When airplanes first started to fly, their speed was measured like that of a moving vehicle on the ground. As air speeds increased, that method became obsolete, and a new method had to be found.    Ernst Mach (1838 1916), an… …   Dictionary of eponyms

  • Mach-O — Icône de terminal, semblable à celle du terminal de MacOS X Extension …   Wikipédia en Français

  • mach — MACH, machi, s.m. (fiz.) Unitate de măsură pentru viteza mişcării fluidelor, utilizată în aerodinamică şi în tehnica rachetelor, egală cu 340 m/s. ♢ Numărul lui Mach = raport între viteza unui proiectil, avion etc. într un fluid şi cea a… …   Dicționar Român

  • Mach-O — Расширение без расширения, .o, .dylib Разработан Университет Карнеги Меллон/Apple Inc. Тип формата двоичный, исполняемый, объектный, динамическая библиотека, дамп памяти Содержит исполняемый код …   Википедия

  • MACH — ist ein Betriebssystem Kernel, der 1985–1994 im Rahmen eines Projekts an der Carnegie Mellon University entwickelt wurde, und gehört zur Klasse der Mikrokernel. Eine aktuelle Inkarnation der Mach Kernel Familie stellt der XNU Kernel dar. Die… …   Deutsch Wikipedia

  • Mach — [mæk US ma:k] n [U] [Date: 1900 2000; Origin: Ernst Mach (1838 1916), Austrian scientist] a unit for measuring speed, especially of an aircraft, in relation to the speed of sound. Mach 1 is the speed of sound, Mach 2 is twice the speed of sound… …   Dictionary of contemporary English

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