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Topic: Inches of mercury

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	USATODAY.com
		A bar is a force of 100,000 Newtons acting on a square meter, which is too large of a unit to be a convenient measure of Earth's air pressure.
		Inches of mercury and centimeters of mercury measure how high the pressure pushes the mercury in a barometer.
		A rule of thumb for the altimeter correction is that the pressure drops about 1 inch of mercury for each 1,000 foot altitude gain.
	www.usatoday.com /weather/wbarocx.htm (779 words)

	Units: I
		The inch was originally defined in England in two ways: as the length of three barleycorns laid end to end, or as the width of a man's thumb at the base of the nail.
		The conventional equivalent of one inch of mercury is 0.491 153 pounds per square inch or 3.386 38 kilopascals (33.8638 millibars).
		The conventional equivalent of one inch of water is 249.0889 pascals, which is 2.490 889 millibars, about 0.036 127 pounds per square inch (psi) or about 0.073 556 inches (1.868 32 millimeters) of mercury.
	www.unc.edu /~rowlett/units/dictI.html (1513 words)

	Inches of Mercury (Site not responding. Last check: )
		Inches of mercury is another unit of measure for atmospheric pressure.
		Inches refers to the height of the column of mercury in the tube of the mercury barometer.
		Average air pressure at sea level is 29.92 inches of mercury.
	cse.cosm.sc.edu /erth_sci/Atmos/Inches.htm (76 words)

	Inch of mercury - Wikipedia, the free encyclopedia
		Inches of mercury, inHg or "Hg is a non-SI unit for pressure.
		It is defined as the pressure exerted by a column of mercury of 1 inch in height at 32 °F (0 °C) at the standard acceleration of gravity.
		The resulting altimeter readings are known as flight levels.
	en.wikipedia.org /wiki/InHg (182 words)

	How do I convert microns of vacuum to inches of Mercury vacuum?
		I have a vacuum gauge on a chemical filling system that reads in microns of vacuum.
		It is way too sensitive and I want to put a vacuum gauge that reads in inches of Mercury vacuum.
		Re: How do I convert microns of vacuum to inches of Mercury vacuum?
	www.madsci.org /posts/archives/may2000/959035657.Eg.q.html (96 words)

	weather.com - Glossary
		They are classified into two types: hard grains of ice consisting of frozen rain drops or largely melted and refrozen snowflakes; pellets of snow encased in a thin layer of ice which have formed from the freezing of droplets intercepted by pellets or water resulting from the partial melting of pellets.
		The name comes from the use of mercurial barometers which equate the height of a column of mercury with air pressure.
		One inch of mercury is equivalent to 33.86 millibars or 25.40 millimeters.
	www.weather.com /glossary/i.html (993 words)

	Snipers Paradise
		The "standard" atmospheric pressure at sea level is 29.92 inches of mercury, or 1013.2 millibars.
		When you multiply by inches of mercury and divide by millibars, the millibars cancel out and you're left with inches of mercury.
		To go the other way from inches of mercury to millibars, you just divide by inches of mercury and multiply by millibars.
	www.snipersparadise.com /faq/index.php?qid=126&catid=11 (193 words)

	National Weather Service - NWS Spokane
		In the U.S., air pressure at the surface is reported in inches of mercury while air pressure aloft is reported in millibars.
		Inches of mercury measure how high the pressure pushes the mercury in a barometer.
		To convert between inches of mercury and millibars, one millibar is equal to 0.03 inches of mercury.
	www.wrh.noaa.gov /otx/outreach/ttalk/baropres.php (283 words)

	SkyWatch - Glossary of Weather Terms
		It is commonly measured by a barometer and expressed as inches of mercury.
		At sea level, a column of air that is one square inch in area will normally weigh 14.7 pounds and be able to hold a column of mercury in a vacuum tube to 29.92 inches high.
		Mercury barometers use a glass tube filled with mercury and inverted over a mercury-filled chamber.
	wilstar.com /skywatch_glossary.htm (1159 words)

	Wind
		In the U.S., air pressure at the surface is reported in inches of mercury while air pressure aloft is reported in millibars, also known as hectopascals (hPa).
		To convert between inches of mercury and millibars, one millibar is equal to 0.02953 inches of mercury.
		Centimeters of mercury can be translated into inches of mercury by dividing the number of centimeters by 2.54.
	www.fortunecity.com /greenfield/bypass/314/paragliding/wind.htm (931 words)

	Mercury (Element) \| World of Scientific Discovery
		Today, we still measure atmospheric pressure in standard units called inches of mercury, and mercury barometers continue to be used to forecast the weather.
		Nearly all mercury exists in the form of a red ore called cinnabar, which is composed of mercury and sulfur.
		Mercury and all of its compounds are extremely poisonous, and mercury is one of the few substances known to have no natural function in the human body.
	www.bookrags.com /research/mercury-element-wsd (1201 words)

	Mercury \| English \| Dictionary & Translation by Babylon
		The attributes of Mercury are the caduceus (a staff with two intertwined snakes) and a purse (a symbol of his connection with commerce).
		Mercury is included in the enumeration of the seven sacred planets of the ancients.
		Mercury does not have an atmosphere, however, since it is too small to possess the gravity necessary to hold gases to its surface.
	www.babylon.com /definition/Mercury/?uil=English (1097 words)

	Fundamentals of Auto and Light Truck Mechanics
		Instead of being measured in pounds of pressure per square inch, as compression is, the vacuum is measured in inches of mercury.
		The term "inches of mercury" refers to the distance that mercury in a U-shaped tube moves when a vacuum is applied to one end of a tube.
		For example, if the mercury rises 10 inches, the value of the vacuum is 10 inches of mercury.
	www.free-ed.net /sweethaven/MechTech/Automotive/Automotive02/lessonMain.asp?iNum=01030305 (1045 words)

	AOPA Flight Training -
		In the United States, inches of mercury are commonly used to measure barometric pressure, including the altimeter settings that weather observers report.
		It's filled with mercury and turned so the open end at the bottom is in a small container of mercury that's open to the air.
		At sea level, on the average, air pressure pushes the mercury 29.92 inches up into the tube, which is why 29.92 inches of mercury is the standard atmospheric pressure at sea level.
	flighttraining.aopa.org /ft_magazine/special/0903_weather.cfm (2044 words)

	Mercury - Wikipedia, the free encyclopedia
		Mercury, or Mercurius, derives from the Roman god Mercury (mythology).
		Inches of mercury, a measure of atmospheric pressure
		Mercury, Savoie, a commune in the Savoie département of France
	en.wikipedia.org /wiki/Mercury (521 words)

	CONVERTING MILLIBARS TO INCHES OF MERCURY (Site not responding. Last check: )
		1013.25 millibars is equal to 29.92 inches of mercury.
		Suppose we want to know what 1034 mb is in inches of mercury.
		Notice on the left side of the equation the two knowns are in a ratio of each other.
	www.theweatherprediction.com /habyhints2/474 (220 words)

	Butterfly Valves in Compressed Air and Vacuum Services
		Inches of mercury is probably the most common unit of vacuum measure of industrial applications in the United States.
		This is the measurement of the difference in height of a column of mercury, in a barometer, at atmospheric pressure, 29.92 inches, and what its height would be at less than atmospheric pressure, or a vacuum.
		When some one say's they need a valve for "27 inches of mercury service" they are referring to, in theory, what the height of mercury in a barometer would be if it were measuring the vacuum in the application, not atmospheric pressure.
	www.pep-plastic.com /manufacturers/hayward/library/valves/library/valves/03v.htm (631 words)

	Liquid Mercury Barometers -- Aneroid Barometers
		Mercury in the tube adjusts until the weight of the mercury column balances the atmospheric force exerted on the reservoir.
		Low pressure allows the mercury to drop to a lower level in the column by lowering the downward force placed on the reservoir.
		The mercury barometer's design gives rise to the expression of atmospheric pressure in inches: the pressure is quoted as the level of the mercury's height in the vertical colum.
	www.edinformatics.com /inventions_inventors/barometer.htm (700 words)

	How Big is the Solar System?
		Saturn-a hazelnut or an acorn, diameter 0.70 inch
		Mercury is supposed to be so close to the Sun that it is merely a scorched rock, and we never see it except in the Sun's glare at dawn or dusk-yet here it is, utterly lost in space!
		Mercury is not on ninth but only one hundredth of the way out to Pluto.
	www.noao.edu /education/peppercorn/pcmain.html (5725 words)

	Pressure
		).\nNon--SI measures (still in use in some parts of the world) include the pound-force per square inch (PSI) and the bar.\nIn the United States air pressure is still measured in inches of mercury (as in the mercury barometer).
		It is approximately equal to typical air pressures at sea level and defined to be\n:1 atm = 101 325 Pa = 101.325 kPa = 1013.25 hPa.
		Obsolete manometric units of pressure such as inches or millimeters of mercury are based on the pressure exerted by the weight of some "standard" fluid under some "standard" gravity.
	encyclopedia.codeboy.net /wikipedia/p/pr/pressure.html (639 words)

	Air pressure
		The mercury barometer is a tube with a reservoir of mercury at one end.
		Though inches of mercury are often reported on your daily weather forecast (especially in the United States), meteorologists use millibars as the units of measurement for air pressure.
		Under average sea level conditions the atmospheric pressure is 1013.2 millibars (29.92 inches of mercury).
	www.uwsp.edu /geo/faculty/ritter/geog101/textbook/circulation/air_pressure_p_1.html (428 words)

	Pressure
		Non-SI measures (still in use in some parts of the world) include the pound-force per square inch (PSI) and the bar.
		In the United States air pressure is still measured in inches of mercury (as in the mercury barometer).
		It is approximately equal to typical air pressures at sea level and defined to be :1 atm = 101 325 Pa = 101.325 kPa = 1013.25 hPa.
	www.nebulasearch.com /encyclopedia/article/Pressure.html (552 words)

	Charles Edwin Inc.- Antique Barometers \| stick barometers \| dial barometers \| mercury barometers
		A long mercury thermometer is mounted on the case in a detachable box; its engraved plate has dual Fahrenheit and Reamur scales ranging from 0 to 120 degrees F. The turned cistern cover protects the boxwood cistern whose closing screw is operated by the vernier knob.
		The register plate is marked "Compensating", showing that the inches scale is slightly shortened in order to correct for the inherent small inaccuracy at the outer ends of the scale, induced by the very small bulb cistern.
		Barometers with dials of less than eight inches in diameter appeared as early as 1815, and by 1830 the form was quite popular.
	www.charles-edwin.com /brmcat.htm (2286 words)

	www.myspace.com/inchesofmercury
		Besides their music "inches" also owns and operates "Inches of mercury music-plex" which provides rehearsal space and other musician services along with a Pro shop in which fans can come and visit, pick up merch or disc golf equipment.
		Mercury was once widely used to measure varying atmospheric pressures before advances in digital/electronic technology of today.
		With a little research the mysticism of mercury is very evident throughout history in science, astronomy, physics and especially in the practice of "Alchemy"; in short, a primitive form of chemistry approached from a spiritual standpoint rather than a scientific philosophy.
	www.myspace.com /inchesofmercury (675 words)

	Mercury Racing \| Tech Corner
		Mercury offers a complete line of branded merchandise, and it's all available in the Mercury DockStore.
		Mercury Marine recommends the use of a fuel stabilizer to prevent fresh fuel from undergoing degradation and oxidation during fuel storage.
		The major consideration in preparing your outboard for storage is to protect it from rust, corrosion, and damage caused by freezing water that may be trapped in the engine.
	www.mercuryracing.com /techcorner/faqs.php (5230 words)

	Weather Sensor Operation: Barometers
		Barometric pressure is most often recorded in inches of mercury, millibars, or kilopascals.
		The height of the column of mercury in the tube is a measurement of air pressure.
		As atmospheric pressure increases, the mercury is forced from the cistern up the tube; when the atmospheric pressure decreases, the mercury flows back into the cistern.
	support.radioshack.com /support_tutorials/weather/ws-gde-07.htm (238 words)

	PRESSURE DEFINITIONS (Site not responding. Last check: )
		At sea level, the average pressure of the atmosphere is sufficient to hold a column of mercury at the height of 76 centimeters or 29.92 inches.
		Since a column of mercury 1 inch high exerts a pressure of 0.49 pound per square inch (psi) at its base, a column of mercury 29.92 inches high exerts a pressure that is equal to 29.92 x 0.49 or about 14.7 psi.
		Most commonly, vacuum is expressed in inches of mercury, with the vacuum gauge scale marked from 0 to 30 in.Hg.
	www.tpub.com /fireman/27.htm (1040 words)

	General FAQs - Mercury Marine (Site not responding. Last check: )
		Mercury offers a complete line of branded merchandise, and it's all available in the Mercury DockStore at http://www.mercurydockstore.com.
		Because it is not possible to know how a given boat will respond to the use of such a product without thorough testing, Mercury cannot recommend that such products be used or not used.
		Each month, spray Mercury Precision Lubricants or Quicksilver Marine Lubricants Corrosion Guard on external metal surfaces (DO NOT spray on corrosion control anodes as this will reduce the effectiveness of the anodes).
	www.mercurymarine.com /general (1546 words)

	Barometers
		A standard mercury barometer has a glass column of about30 inches (about 76 cm) in height, closedat one end, with an open mercury-filled reservoir at the base.
		Mercury in the tube adjusts until the weight of the mercury columnbalances the atmospheric force exerted on the reservoir.
		The mercury barometer's design gives rise to the expression of atmospheric pressure in inches: the pressure is quoted as thelevel of the mercury's height in the vertical colum.
	www.altvetmed.com /face/18570-barometers.html (392 words)

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