A space entirely devoid of matter (called also, by way of distinction, absolute vacuum); hence, in a more general sense, a space, as the interior of a closed vessel, which has been exhausted to a high or the highest degree by an air pump or other artificial means; as, water boils at a reduced temperature in a vacuum.
The condition of rarefaction, or reduction of pressure below that of the atmosphere, in a vessel, as the condenser of a steam engine, which is nearly exhausted of air or steam, etc.; as, a vacuum of 26 inches of mercury, or 13 pounds per square inch.
Strictly speaking, a space in which the total pressure is less than atmospheric.
An enclosed area in which the air pressure is below that of the surrounding atmospheric pressure.
Vacuum is created through use of a vacuum pump or aspirator pump, to facilitate specific biological preparations, such as inclusions or disinfection of material for in vitro culture, etc.
The absence of matter. Outer space is very close to a pure vacuum, with an average of .07 particles found in every cubic meter.
1. A part of space that is totally absent of matter. 2. An empty space. 3.A state of emptiness; a void.
Space which is entirely devoid of matter.
absolute vaccuum. Compare with partial vaccuum. A volume which contains no matter.
A condition of pressure which is less than that of the atmosphere; negative pressure.
Satellite: A space entirely devoid of matter.
Space that contains very little matter in a given volume (e.g., a region in which air has been removed).
(1) Space devoid of atoms or molecules. (2) Emptying of air.
That pressure which is lower than the surrounding atmospheric pressure.
The reduction of atmospheric pressure within a pipe, tank, pump or other vessel. Measured in inches of Mercury, or 33.9 feet of head.
A condition created in a well when air is not allowed to be displaced between the casing and the pump column.
The state of negative pressure. Reflects how thoroughly air is removed from within a jar of processed food--the higher the vacuum, the less air left in the jar.
A space absolutely devoid of matter. A vacuum also refers to a space partially exhausted (as to the highest degree possible) by artificial means.
an empty area or space; "the huge desert voids"; "the emptiness of outer space"; "without their support he'll be ruling in a vacuum"
a region empty of matter
a bad place for mercury
a condition of nothingness where there are no molecules
a large empty space where the Pope lives
an empty space where the Pope lives
an empty space, which has no atmosphere nor anything
a region with no matter in it
a space entirely empty of matter ( OED )
a space from which the gas has been removed
a space that is empty of any matter
a space that is empty of everything, even air
a space void of air with NO leaks
a special case of static pressure
a volume devoid of space
a volume from which practically all air has been exhausted
a volume of space that is empty of matter and radiation including air so that gaseous pressure is much less than standard atmospheric pressure
a volume of space that is empty of matter, relative to the
a volume of space that is empty, or relatively
A portion of space that has no or nearly no matter within it. Outer space is a near vacuum, with only a few atoms of gas per cubic meter.
A gas with low pressure, having a minimum amount of atoms or molecules. The perfect vacuum is impossible to reach.
In theory, a space in which there is no matter. However, a perfect vacuum is unobtainable and the term describes a gas at a very low pressure.
In the strict sense of the word, a vacuum describes an empty space in which there are no particles. The idea of a vacuum is ultimately not understood in the considerations of the Quantum Field Theory and the General Theory of Relativity.
A space in which the pressure is far below normal atmospheric pressure.
Vacuum measured relative to ambient atmospheric pressure.
A pressure below atmospheric pressure. A perfect vacuum is 30 inches Mercury (periodic symbol "Hg").
Theoretically, space without matter in it. A perfect vacuum has never been obtained; the best man-made vacuums contain less than 100,000 gas molecules per cc, compared to about 30 billion billion (30 × 1018) molecules for air at sea level.
The pressure range between the earth atmosphere and no pressure, normally expressed in inches of mercury (in.Hg) vacuum pump.
Any pressure less than atmospheric. Can present a problem for the elastomer in many seal applications.
A space where the pressure is significantly below that of standard atmospheric pressure.
An area containing nothing. A void. A lack of atmosphere.
Containing air or other gas at a reduced pressure.
Pressure less than ambient atmospheric pressure measured in inches of mercury (HgÂ”).
an absence of air or other gas.
Any pressure less than atmospheric pressure.
A space from which (most) gases and vapors have been removed.
Syn negative pressure.
Suction such that pressure below atmospheric is created prior to the natural gas/coal bed methane entering the blower. Approximate equivalents (atmospheric pressure): 1 atm = 14.7 psi = 30 "Hg = 101 kPa.
A space of air or other gas that is less than atmospheric pressure, expressed in inches of mercury (in. Hg).
Negative pressure commonly expressed in inches of mercury ("Hg), millimeters of mercury (mmHg) which is equal to torr. One atmosphere equals 14.7 psia (0 psig), 29.92"Hg (0"Hg absolute), 760mm Hg, 760 torr or 1,013 mbar.
A volume that contains no matter - space is almost a vacuum. Waves
The absence or reduction of air pressure. Vacuum is created in the intake manifold by the pumping action of the pistons. Air is pulled out of the manifold into the cylinders faster than it can be replenished by air bypassing the throttle plate. The thrott
refers to a volume of space that has little or no pressure due to the absence of air or any other gasses; there are differing degrees of vacuum, which is why Empire Magnetics offers three different grades of vacuum rated motors and related products.
The depression of pressure below atmospheric pressure. The maximum vacuum possible is about 30 inches of Mercury (Hg).
An enclosed space from which all air has been removed, having an absolute atmospheric pressure of near zero.
1. A space absolutely devoid of matter. 2. Pressure lower than atmospheric pressure.
a place or region containing no solid, liquid or gas.
An enclosed space, such as that inside a vacuum tube, out of which most of the air or gas has been taken by a pumping action. A vacuum cleaner works by suction or the creation of a partial vacuum.
A pressure less than atmospheric pressure, measured either from the base of zero pressure or from the base of atmospheric pressure.
Negative atmospheric pressure.
In science, the absence of air. In automotive circles, any pressure that is lower than atmospheric pressure(14.7psi). Vacuum is used extensively for controlling fuel flow within various metering circuits in a carburetor. Generally measured in inches of Mercury(in-Hg). There are three types of vacuum: monifold, ported and venturi. The strength of these vacuums depends on the throttle opening, engine speed and load. See manifold vacuum, ported vacuum and venturi vacuum. yVacuum break diaphragmszˆø‚«ž‚Þƒ^ƒCƒv‚Æ”ò‚Ño‚éƒ^ƒCƒvipull-off/qualifyingj‚ª‚ ‚èƒI[ƒgƒ`ƒ‡[ƒN‚ÉŽg‚í‚ê‚éBƒoƒLƒ…[ƒ€‚ª‚‚éiƒGƒ“ƒWƒ“‚ªŽn“®‚·‚éj‚Æƒ`ƒ‡[ƒN‚ð‚¿‚å‚±‚Á‚ÆŠJ‚«A‰ß”Zi•W€‚É‘Î‚µ‚Ä–ñ20`50ƒp[ƒZƒ“ƒg”Z‚¢jó‘Ô‚ðŽáŠ±ŠÉ˜a‚·‚éB
"Vacuum" means any pressure less than that exerted by the atmosphere.
The absence of all matter - total void. Also, a space exhausted by artificial means.
A vacuum is a space with no or very little gas pressure.
A condition in which normal atmospheric pressure is reduced in a pump chamber during priming operations; space completely devoid of matter or pressure. In fire service terms, it is more commonly used to describe a pressure that is somewhat less than atmospheric pressure; a vacuum is needed to facilitate drafting of water from a static source.
Depression of pressure below atmospheric pressure. The maximum vacuum possible is about 63.5 cm (25 in.) of Hg.
The absence of matter, including air, in either an open or confined space.
A vacuum is a volume of space that is essentially empty of matter, so that gaseous pressure is much less than standard atmospheric pressure. The root of the word vacuum is the Latin adjective vacuus which means "empty," but space can never be perfectly empty. A perfect vacuum with a gaseous pressure of absolute zero is a philosophical concept that is never observed in practice, not least because quantum theory predicts that no volume of space is perfectly empty in this way.