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  1. › wiki › Bar_(unit)Bar (unit) - Wikipedia

    The bar is a metric unit of pressure, but not part of the International System of Units (SI). It is defined as exactly equal to 100,000 Pa (100 kPa), or slightly less than the current average atmospheric pressure on Earth at sea level (approximately 1.013 bar).

  2. Bar (unidad de presión) - Wikipedia, la enciclopedia libre Bar (unidad de presión) Un bar (símbolo: bar) es una unidad de presión, equivalente a un millón de barias y a 0,986923 atmósfera (atm). La palabra «bar» tiene su origen en « báros » ( βάρος ), que en griego significa «peso». Definición

  3. The bar (symbol bar ), decibar (symbol dbar) and the millibar (symbol mbar, also mb) are units of pressure. They are not SI units, but they are anyhow also used with (although discouraged) for use with the SI. The bar is still used in descriptions of pressure because it is about the same as atmospheric pressure. Terms

    • Pluriels Du Nom et Du Symbole
    • Conversion D'unités
    • Bar Absolu et Bar relatif
    • Utilisation
    • Articles connexes

    Alors que le nom « bar » de l'unité s'accorde au pluriel (« la pression est mesurée en bars »), le symbole « bar » est invariable, comme le sont tous les symboles d'unités[4]. Il en est de même pour les multiples et sous-multiples : pression mesurée en millibars ou en mbar. Les écritures suivantes sont possibles : 2 bars ou 2 bar, 1 013 millibars o...

    Un bar vaut 105 pascals (soit 100 kPa ou 0,1 MPa) ou encore 100 kilonewtons par mètre carré (100 kN/m2 = 100 kPa) donc aussi 10 newtons par centimètre carré (1 daN/cm2). De manière abusive, on considère qu'un bar vaut un kilogramme-force par centimètre carré (kgf/cm2). Ce n'est qu'une approximation vraie à 2 % près, soit la différence entre le déca...

    Le « bar absolu » (symbole bar abs. ou barA) est une échelle de pression dont le zéro correspond au vide parfait. Le « bar relatif » (symbole bar rel. ou barR), également appelé « bar jauge » ou « bar effectif » en français, et « bar gauge » en anglais (symbole barg), exprime l'écart à la pression atmosphérique normale : 0 bar rel. vaut exactement ...

    Le bar est utilisé dans les domaines de la plongée sous-marine, de l'océanographie, de l'industrie en général, et en particulier l'hydraulique industrielle. En météorologie, on utilise surtout sa subdivision, le millibar (symbole mbar), équivalent à l’hectopascal(hPa) dans le Système international.

    • Ksi?
    • Definitions
    • Merge from Millibar
    • Conversion
    • Bara, Barg - Really deprecated?
    • Use in Aeronautics
    • Merge from decibars
    • Bars in Meteorology?
    • Hectopascals
    • feet?

    The photo has a caption that refers to "700 bars (10 ksi) of pressure", but nowhere is a "ksi" defined. Without doing the conversions to all the different units mentioned in the article, I really don't know what ksi could refer to or be a typo for. Anyone know what's up with it? — Preceding unsigned comment added by (talk) 17:26, 18 ...

    The bar as: 1. 1 bar = 100 000 pascals (Pa) = 100 kPa1 The old definition was: 1. 1 bar = 1 000 000 dynes/square centimetre But these definitions are equivalent, so it makes no sense to say one is the "old" definition. A change of units in the way the definition is worded is nota change in definition! 1 bar = 10^6 dynes/(cm)^2 = 10^6 (10^(-5)) N/(1...

    Bar (unit) and millibar repeat a lot of the same material. In keeping with the precedent for merging articles on multiples and submultiples of units into the article on the "base" or unprefixed unit, millibar should be merged into this article. Indefatigable16:33, 30 December 2005 (UTC)

    Even though bars and millibars represent atmospheric pressure rather than altitude, you can get a general estimate of the altitude by applying the following conversions. Remember that this is a general estimate. Atmospheric pressures are not constant throughout the atmosphere. David Mitchell22:06, 27 February 2006 (UTC)

    I don't know about in industry but these are taught and encouraged on my university course. Seems like a convenient way of specifying absolute or gauge pressure without having to write it out in words every time. —Preceding unsigned comment added by (talk) 23:26, 20 May 2008 (UTC) 1. I don't think it's deprecated. In the oil and gas i...

    It seems that millibars are also used to express altitude in conversations between air traffic controls and aircrafts. Can anyone confirm this? 1. Yes, but only to set the pressure setting on their altimeters not to specify an actual height. For instance on approach an air traffic controller may instruct a pilot to fly on a course of 270 degrees at...

    Hi, I'm Decibars and I'm new to the neighborhood... just merged in today, thought I would say hello. MDSNYDER05:57, 4 July 2007 (UTC)

    Meteorology and millibars is covered somewhat in the article w/ respect to hurricanes, but in the U.S. (the National Weather Service in particular) forecasters tend to use it as an altitude, too, i.e. 850 mb level, 500 mb level. Would these be straight-up conversions to a certain number of feet, or is there another way these levels are notable? —Ro...

    I reverted the edit that removed the 1 hPa from the definitions section 1 mbar = 0.001 bar = 0.1 kPa = 1 hPa = 1,000 dyn/cm² Hectopascals are very widely used in Australia and also referred to elsewhere in the article, In my view having them in the definition section doesn't detract from the article and only improves its clarity. M100 (talk) 01:07,...

    One bar equal to how many feet? —Preceding unsigned comment added by (talk) 07:45, 27 July 2009 (UTC)

  4. Da Wikipedia, l'enciclopedia libera. Il bar è un' unità di misura della pressione nel sistema CGS. Corrisponde a una mega baria, ovvero 10 6 dine /cm². Il nome deriva dalla parola greca βαρύς ("pesante"). La pressione di un bar corrisponde approssimativamente alla pressione atmosferica terrestre al livello del mare.

  5. Bar ialah unit bukan SI untuk tekanan yang ditakrifkan oleh IUPAC sebagai bersamaan tepat dengan 100,000 Pa. Ia hampir sama dengan tekanan atmosfera Bumi pada aras laut, dan sejak 1982, IUPAC telah mengesyorkan supaya piawai bagi tekanan atmosfera diharmonikan kepada 100,000 Pa = 1 bar ≈ 750.0616827 Torr.

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