zero absolute pressure

A total vacuum. Zero on the absolute pressure scale

Dictionary of automotive terms. 2015.

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  • absolute pressure — Pressure measured from a starting point of zero in perfect vacuum. When measured by the absolute pressure scale, atmospheric pressure is 14.7 psi or 29.92 inches of mercury (in Hg). Also see manifold absolute pressure sensor …   Dictionary of automotive terms

  • absolute pressure — The pressure measured relative to zero pressure, or a total vacuum, as opposed to gauge pressure, which is pressure measured relative to ambient pressure. A manifold absolute pressure (MAP) gauge measures absolute pressure in a reciprocating… …   Aviation dictionary

  • absolute pressure — noun : total pressure at a point in a fluid equaling the sum of the gage and the atmospheric pressures * * * absolute pressure, fluid pressure measured above a vacuum (or above zero pressure) in units of force per unit of area …   Useful english dictionary

  • Difference between gauge and absolute pressure — The most common pressure reference is gauge pressure signified by a (g) after the pressure unit e.g. 30 psi g, which means that the pressure measured is the total pressure minus atmospheric pressure. There are two types of gauge reference… …   Wikipedia

  • Pressure measurement — The construction of a bourdon tube gauge, construction elements are made of brass Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure pressure are called pressure gauges or vacuum gauges. A… …   Wikipedia

  • Pressure — This article is about pressure in the physical sciences. For other uses, see Pressure (disambiguation). Pressure as exerted by particle collisions inside a closed container …   Wikipedia

  • pressure — pressureless, adj. /presh euhr/, n., v., pressured, pressuring. n. 1. the exertion of force upon a surface by an object, fluid, etc., in contact with it: the pressure of earth against a wall. 2. Physics. force per unit area. Symbol: P Cf. stress… …   Universalium

  • absolute — /ˈæbsəlut / (say absuhlooht) adjective 1. free from imperfection; complete; perfect: *He enjoyed, as always, the absolute quiet of the little garden house after the buzz and jangle of the city –c.j. koch, 1978. 2. not mixed; pure. 3. free from… …   Australian English dictionary

  • Zero-point energy — is the lowest possible energy that a quantum mechanical physical system may have; it is the energy of its ground state. All quantum mechanical systems undergo fluctuations even in their ground state and have an associated zero point energy, a… …   Wikipedia

  • Absolute electrode potential — Absolute electrode potential, in electrochemistry, according to an IUPAC definition [ [http://goldbook.iupac.org/A00022.html IUPAC Gold Book absolute electrode potential ] ] , is the electrode potential of a metal measured with respect to a… …   Wikipedia

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