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Topic: Metric units

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Imperial unit

	Metric System - MSN Encarta
		The measurements of modern science required still greater precision, however, and in 1983 the meter was defined as the length of the path traveled by light in a vacuum during a time interval of 1/299,792,458 of a second.
		All units of measurement in the metric system are based on decimals—that is, units that increase or decrease by multiples of ten.
		To change units in the metric system, simply move the decimal point to the right or the left, depending on whether the unit of measurement is increasing or decreasing by ten or one hundred and so on.
	encarta.msn.com /encyclopedia_761561345/Metric_System.html (799 words)

	Metric system - Wikipedia, the free encyclopedia
		The metric system is a system of units for measurement developed in late 18th century France to replace the disparate systems of measures then in use with a unified, natural and universal system.
		In the early metric system there were several fundamental or base units, the grad or grade for angles, the metre for length, the gram for weight and the litre for capacity.
		The original base units of the metric system could be derived from the length of a meridian of the Earth and the weight of a certain volume of pure water.
	en.wikipedia.org /wiki/Metric_system (2077 words)

	SI - Wikipedia, the free encyclopedia
		The swift worldwide adoption of the metric system as a tool of economy and everyday commerce was based mainly on the lack of customary systems in many countries to adequately describe some concepts, or as a result of an attempt to standardize the many regional variations in the customary system.
		Since most non-SI units, such as the U.S. customary units, are nowadays defined in terms of SI units, any change in the definition of the SI units results in a change of the definition of the older units as well.
		ISO 1000:1992 SI units and recommendations for the use of their multiples and of certain other units, with its price tag of 99 Swiss francs for a 22 page, coverless pamphlet showing why the public is sometimes a little slow to pick up on their recommendations.
	en.wikipedia.org /wiki/SI (1530 words)

	Decimal Time - Metric Time
		Metric multiples include the kilosecond and megasecond, but for everyday use, non-metric minutes, hours, and days are used, instead, and larger units such as weeks, months, and years.
		Metric prefixes are often used for decimal submultiple units of time interval, such as milliseconds, microseconds and nanoseconds, but larger quantities are usually measured in non-decimal units such as minutes, hours, days, etc., instead of kiloseconds and megaseconds.
		In addition to the base units for independent quantities, such as time interval, derived quantities and units are obtained from equations derived from the base units; for instance, a coulomb of electric charge is defined as one second times one ampere.
	www.decimaltime.hynes.net /metric.html (2105 words)

	Metric System
		The Metric System also allows for multiples or fractions of a unit to be measured except that instead of using fractions with variable denominators the unit size is variable.
		Metric length is collected with a ruler measured in meter (m), centimeter (cm), and/or millimeter (mm) units.
		A metric unit of degree is larger than an english degree unit so we must use a formula to convert the two measurements.
	www.mc.cc.md.us /Departments/biotp/Metric.html (1812 words)

	Units: The Metric System
		Prior to the introduction of the metric system, it was common for units of length, land area, and weight to vary, not just from one country to another but from one region to another within the same country.
		These prefixes denote powers of ten, so that metric units are always divided into tens, hundreds, thousands, etc. The original prefixes included milli- for 1/1,000, centi- for 1/100, deci- for 1/10, deka- for 10, hecto- for 100, and kilo- for 1,000.
		The metric system has been the customary measurement system in France for almost two centuries, in the rest of continental Europe for at least one century, and in the rest of the world for a least a generation or two.
	www.unc.edu /~rowlett/units/metric.html (1109 words)

	CHEMTUTOR UNITS AND MEASURES (Site not responding. Last check: 2007-11-01)
		This unit of inches in the example is one of the common units in the dimension of length.
		All the metric units of length use the root word 'meter' with the metric prefixes in the next table.
		The official SI unit of pressure, the Pascal, Pa, is not often used in chemistry because it is such a small unit.
	www.chemtutor.com /unit.htm (3812 words)

	Metric system, SI - The metric system units and history
		The metric system is a system of units for measurement developed in late 18th century France by the chemist Lavoisier to replace the disparate systems of measures then in use with a unified, natural and universal system.
		In the early metric system there were several fundamental or base units, the grad or grade for angles, the metre for length, the gram for weight and the litre for capacity.
		The original base units of the metric system could be derived from the length of a meridian of the Earth and the weight of a certain volume of pure water.
	www.sciencemadesimple.com /metric_system.html (2566 words)

	NIST Metric Information and Conversions: Metric Style Guide (NISTLC 1137)
		Symbols: Unit symbols are written in lower case letters except for liter and those units derived from the name of a person (m for meter, but W for watt, Pa for pascal, etc.).
		The pronunciation of common metric units is well known, except for Pascal, which rhymes with rascal, and hectare, which rhymes with bare.
		The units, symbols, and other notations used in this guide are in accord with the International System of Units, which is interpreted or midified for use in the United States by the Secretary of Commerce (55 FR 52242, December 20, 1990).
	ts.nist.gov /WeightsAndMeasures/Metric/metrsty3.cfm (955 words)

	Overview of important units
		This page is intended to introduce you to the units that a literate person might be expected to know (such as the bar), or which you may come across (such as the Newton).
		The length units are probably what most people think of when they think of the metric system, so most people are probably fairly familiar with them.
		The metric unit for force is the Newton (N).
	themetricsystem.info /overviewofunits.htm (1035 words)

	Measurements, Units of Measurement, Weights and Measures - Numericana
		The "metric equivalent" of the slug is the "hyl" of exactly 9.80665 kg (also called "metric slug" or TME), which is the unit of mass of the so-called "metric-technical system".
		The SI unit of mass is the kilogram, not the gram or the hyl.
		The ton unit pertaining to nuclear explosions is a unit of energy equal to 1000 000 000 thermochemical calories (of exactly 4.184 J) and is thus exactly equal to 4184 000 000 joules.
	home.att.net /~numericana/answer/units.htm (11012 words)

	Essentials of the SI: Base & derived units
		Examples of such SI derived units are given in Table 2, where it should be noted that the symbol 1 for quantities of dimension 1 such as mass fraction is generally omitted.
		In photometry, the unit name steradian and the unit symbol sr are usually retained in expressions for derived units.
		For a graphical illustration of how the 22 derived units with special names and symbols given in Table 3 are related to the seven SI base units, see relationships among SI units.
	physics.nist.gov /cuu/Units/units.html (468 words)

	Metric Units & Converting Between Them
		Metric units are very nice to work with, since they are all multiples of ten (or a hundred, or one-tenth, etc) of each other.
		The basic units are meters (for length), grams (for mass or weight), and liters (for volume).
		And the different units convert into one another rather nicely, with one milliliter equalling one cubic centimeter (the "cc" of medical shows on television) and one gram being the weight of one cc of water.
	www.purplemath.com /modules/metric.htm (476 words)

	Metrication (Conversion to SI Metric Units)
		Use of a single unit for energy measurements facilitates the teaching of the equivalence of thermal, mechanical, chemical, and electrical energy and the understanding of energy efficiency issues in the conversion of chemical energy to electrical or mechanical energy.
		Consistent use of S.I. units is helpful in interdisciplinary studies (e.g., nanotechnology), avoids the proliferation of measurements units used in different subject domains of science and engineering, e.g., the various units used for energy and work across mechanical engineering, electrical engineering, physics, and chemistry.
		S.I. (metric) conventions for measurement units of concentration are to record moles per cubic meter (or commonly molar concentration of moles/liter abbreviated M).
	hpcrd.lbl.gov /staff/olken/metrication.htm (2617 words)

	Metric Units
		The basic unit of metric length is the meter (m).
		The basic unit of metric volume is the liter (L).
		Another frequently used unit of volume is based on a cube that is 1 cm on each of its sides.
	wps.prenhall.com /esm_corwin_chemistry_4/0,8579,1065749-,00.html (616 words)

	Metric typographic units
		Metric typographic units are already used in Japan and to some degree in Germany and other European countries.
		US developers should realize that over 95% of the world population grew up using the metric system and that it is therefore prudent to design a system today from the very lowest level up purely in metric units.
		Conversion to archaic units like the inch and the various points should only be an add-on feature in the user interface on top of an underlying purely metric architecture, and not the other way round.
	www.cl.cam.ac.uk /~mgk25/metric-typo (1915 words)

	Metric units and Measurement
		The standard unit of length in the metric system is the meter.
		The standard unit of volume in the metric system is the liter.
		The standard unit of mass in the metric system is the gram.
	www.mathleague.com /help/metric/metric.htm (467 words)

	[No title] (Site not responding. Last check: 2007-11-01)
		The definition of the standard metric unit of force is stated by the above equation.
		Subsequent processing of the data by the navigation software algorithm therefore, underestimated the effect on the spacecraft trajectory by a factor of 4.45, which is the required conversion factor from force in pounds to Newtons.
		Now that she is in the United States, she uses customary units, such as inches and feet.
	www.lycos.com /info/metric-units.html (396 words)

	Conversion of units - metric conversions
		The goal was to replace the chaotic collection of units being in use with a system based on one standard and decimal factors.
		The standards for other measurements in metric system were set in a similar way.
		All units of a particular measurement are consctructed from the corresponding base unit by adding some metric prefix.
	www.convert-me.com /en/metric_conversions_en.html (392 words)

	NASA - Metric Moon
		NASA has decided to use metric units for all operations on the lunar surface when it returns to the Moon.
		The decision is a victory not only for the metric system itself, which by this decision increases its land area in the solar system by 27%, but also for the spirit of international cooperation in exploring the Moon.
		The confusion that can arise from using mixed units was highlighted by the loss of the Mars Climate Orbiter robotic probe in 1999, which occurred because a contractor provided thruster firing data in English units while NASA was using metric.
	science.nasa.gov /headlines/y2007/08jan_metricmoon.htm?list214115 (734 words)

	Units of Measurement
		Caught in a slow-moving transition from customary to metric units, we employ a fascinating and sometimes frustrating mixture of units in talking about the same things.
		In this way, all the units of measurement Americans use every day are based on the standards of the metric system.
		Since 1875, in fact, the United States has subscribed to the International System of Weights and Measures, the official version of the metric system.
	www.unc.edu /~rowlett/units (858 words)

	NIST Metric Information and Conversions: Metric Publications
		The "Metric Style Guide" addresses how to use metric units in written and verbal communication by addressing the metric prefixes, proper spelling of terms, how to make conversions, use of symbols, plurals, pronunciation, and decimal points.
		This report, prepared for the Metric Program, at the National Institute of Standards and Technology, of the U.S. Department of Commerce, is the result of research into and analysis of the unique data on U.S. manufacturers maintained by the Thomas Publishing Company.
		Appendix A provides the definitions of the SI base units, and the radian and steradian, while Appendix B gives conversion factors for converting values of quantities expressed in units that are mainly unacceptable for use with the SI to values expressed mainly in units of the SI.
	ts.nist.gov /WeightsAndMeasures/Metric/mpo_pubs.cfm (658 words)

	WSDOT - Metric Conversion Factors
		The metric system of measurement was developed during the French Revolution and was first promoted in the U.S. by Thomas Jefferson.
		The metric system is much simpler to use than the existing English system since all its units of measurement are divisible by 10.
		The metric names conform to International Standards Organization (ISO) usage and apply to all plumbing, natural gas, heating oil, drainage, and miscellaneous piping used in buildings and civil works projects.
	www.wsdot.wa.gov /reference/metrics/factors.htm (896 words)

	Amazon.com: Metric Units and Conversion Charts: Books (Site not responding. Last check: 2007-11-01)
		The charts make a clear distinction between SI and other metric units by identifying SI units by red boxes.
		Official symbols of all SI units are given, along with the name of the unit.
		A new chapter on mass, force and gravity explains how the units of force were established.
	www.amazon.com /exec/obidos/tg/detail/-/0780310500?v=glance (717 words)

	Earth Atmosphere Model - Metric Units
		The particular model shown here was developed in the early sixties, and the curve fits are given in Metric units.
		For the temperature T and the pressure p, the metric units curve fits for the troposphere are:
		The metric units curve fits for the lower stratosphere are:
	www.grc.nasa.gov /WWW/K-12/airplane/atmosmet.html (594 words)

	metric units (Site not responding. Last check: 2007-11-01)
		There are three major parts to the metric system: the seven base units, the prefixes and units built up from the base units.
		A metric prefix is a modifier on the root word and it tells us the unit of measure.
		The unit which is most often squared or cubed is the length unit.
	www.gasd.k12.pa.us /~tlattanzio/Metric.htm (2974 words)

	Metric versus U.S. units
		This page provides information about units used in Switzerland - which are the same as in all other European countries - and how they relate to the U.S. unit system.
		The metric unit system is easy to handle because everything is a multiple or a fraction of ten.
		There is a base unit for each type of measurement, such as meter (abbreviation m) for length, gramm (abbreviation g or gr) for weight or liter (abbreviation l or lt) for volume.
	www.about.ch /various/unit_conversion.html (577 words)

	U.S. Metric Association (USMA)
		Conversions between unit systems are a poor way to learn the metric system, and conversion factors (or numbers converted with inappropriate precision) can make the metric system look complicated.
		Appendixes contain information on technical units used in industry, conversion factors for the most commonly used units, and tips for remembering the everyday units and their sizes.
		Metrication in other countries (Which countries are not metric, advance of metric usage in the world, and how several other countries have changed to metric)
	lamar.colostate.edu /~hillger (1732 words)

	Online conversion of weights and measures, measurement conversion.
		Temperature unit conversions: Celsius, Fahrenheit, Kelvin, Reaumur, Rankine
		Metric units, British and U.S., car performance, free fall acceleration on Earth, moon, Mars and Venus...
		The units are arranged by cathegory and alphabetically.
	www.convert-me.com /en (839 words)

	KryssTal : The Metric System
		The solid angle subtended at the centre of a sphere of radius r by a portion of the surface of the sphere having an area r
		All metric units can be used as fractions or multiples by using prefixes.
		The derived units in the Metric System are made up from various combinations of the fundamental units.
	www.krysstal.com /metric.html (447 words)

	Metric Conversion Tables to or from Imperial Measurements The SI System for Metric Conversion
		Summary:- Metric Conversion to or from 1000+ units :- kilos lbs oz ft btu awg swg mpg deg F C abampere abcoulomb abfarad abhenry abmho abohm abvolt acceleration standard acre acres acre-feet american wire gauge ampere hours ampere-turns amps angstrom unit are astronomical unit atmospheres
		One handy metric link between units to remember is that 1 Litre [1000cc] of pure water weighs 1 kilogram.
		Metrication is a great help but has also created anomalies; I have seen pressure gauges changed from a commonly used psi to kg/cm.sq., bar, pascal, kPa and atmos but will no doubt move to a popular metric standard in a few decades.
	www.simetric.co.uk (429 words)

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