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Topic: Base units

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	SI base unit - Wikipedia, the free encyclopedia
		The unit of mass is equal to the mass of the international prototype kilogram (a platinum-iridium cylinder) kept at the Bureau International des Poids et Mesures (BIPM), Sèvres, Paris (1st CGPM (1889), CR 34-38).
		The unit of time is the duration of exactly 9 192 631 770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of the caesium-133 atom at a temperature of 0 K (13th CGPM (1967-1968) Resolution 1, CR 103).
		The unit of length is equal to the length of the path travelled by light in a vacuum during the time interval of 1/299 792 458 of a second (17th CGPM (1983) Resolution 1, CR 97).
	en.wikipedia.org /wiki/SI_base_unit (521 words)

	Units of measurement - Wikipedia, the free encyclopedia
		One example of the importance of agreed units is the failure of the NASA Mars Climate Orbiter, which crashed on the planet Mars in September 1999 instead of entering orbit, due to miscommunications about the value of forces: different computer programs used different units of measurement (newton versus pound force).
		US customary units are the main system of measurement in the United States however some steps towards metrication have been made.
		Different systems of units are based on different choices of a set of fundamental units.
	en.wikipedia.org /wiki/Physical_unit (1440 words)

	Units in MathML
		Unit symbols are written in roman (upright) type, are not altered in the plural, are not followed by a period except at the end of a sentence, and no space is left between a prefix and a unit symbol.
		No SI base units, derived units with special names and symbols, or derived units with special names admitted for reasons of safeguarding human health requires a context as they are understood to be the default.
		If the dimension of a unit and the conversion of that unit to SI (see SI conversion factor) are known, then converting the given information to any other system of units is straight forward so long as the conversion from SI to the target unit is known.
	www.w3.org /TR/2003/NOTE-mathml-units-20031110 (3544 words)

	Sensors Magazine Online - April 1999 - The Representation of Physical Units in IEEE 1451.2 (Site not responding. Last check: 2007-11-02)
		Two categories of units that are not expressed in terms of the base units are the arbitrary units such as hardness and "digital data." Identification of these quantities can can be accomplished by an identifier that defines classes of units.
		The enumeration is 0, indicating that the units are derived by multiplying the exponents for the base units.
		The appropriate unit for this transducer is "widgets," a unit that cannot be derived from the nine base units defined in the Standard.
	www.sensorsmag.com /articles/0499/0499_28/main.shtml (2477 words)

	Units: The International System
		For example, the SI unit of force, the newton, is defined to be the force that accelerates a mass of one kilogram at the rate of one meter per second per second.
		units for measurement of magnetism: the weber (flux), tesla (flux density), and henry (inductance);
		These units are supposed to be "defined in relation to the SI in every document in which they are used," and "their use is not encouraged." These barely-tolerated units might well be prohibited by future meetings of the CGPM.
	www.unc.edu /~rowlett/units/sipm.html (1012 words)

	SI Units (Site not responding. Last check: 2007-11-02)
		In SI, a larger or smaller unit for a physical quantity is indicated by an SI prefix, which is a prefix used in the International System to indicate a power of ten.
		The kilogram (kg) is the SI base unit of mass.
		The SI base unit of temperature is the kelvin (K).
	chemistry.twu.edu /tutorial/SIUnits.html (453 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)

	[No title]
		The enumeration is zero to indicate that the units are derived by multiplying the exponents for the base units.
		The appropriate unit for this transducer is “widgets.” It is not possible to derive the unit “widgets” from the nine base units defined in the standard.
		By providing a way for a set of base units to be incorporated into the transducer the working group has standardized the way that the units are represented in the TEDS and the way that the calibration coefficients are represented.
	www.ornl.gov /sci/p1451/p1451.3/User_Guides/physical_units.doc (2970 words)

	[No title]
		Measurement units are delimited by exponents or the period symbol (".") The division slash "/" may appear once in a unit specification.
		Base unit is the base unit for that measure.
		See http://physics.nist.gov/cuu/Units/binary.html TEMPERATURE-MEASURE base unit: K (degree kelvin) :units F (degree Fahrenheit) C (degree Celsius) or Centigrade R (degree Rankine) Fahrenheit counterpart to Kelvin Note: The temperature measure differs from all the others in that it is linked to a scale with different zero points for various measures.
	www.isi.edu /isd/LOOM/documentation/unit-definitions.text (513 words)

	Current definitions of the SI units
		The meter is the length of the path travelled by light in vacuum during a time interval of
		The kilogram is the unit of mass; it is equal to the mass of the international prototype of the kilogram.
		The kelvin, unit of thermodynamic temperature, is the fraction 1/273.16 of the thermodynamic temperature of the triple point of water.
	physics.nist.gov /cuu/Units/current.html (231 words)

	Units: SI Fundamental Units
		For example, the second, the base unit of time, is now defined as that period of time in which the waves of radiation emitted by cesium atoms, under specified conditions, display exactly 9 192 631 770 cycles.
		The meter, the base unit of distance, is defined by stating that the speed of light, a universal physical constant, is exactly 299 792 458 meters per second.
		In fact, the kilogram is the only base unit still defined by a physical object.
	www.unc.edu /~rowlett/units/sifundam.html (612 words)

	International System of Units
		A class of units in SI that are completely defined in terms of the base units, but which have been given their own names.
		The great advantage of Giorgi's proposal was that it used familiar units of mass, length, and time and, with rationalized units (and the right choice of a value for the permeability of free space), it preserved the sizes of the practical electric units, even though they were defined in absolute rather than material terms.
		The remaining base unit, the mole, was added by the 14th CGPM in 1971 (Resolution 3).
	www.sizes.com /units/SI.htm (907 words)

	Brownridge SI Material
		Because kilogram (not gram) is the base unit, prefixes are all offset by 1000.
		Pronounce units and their multiples with the primary stress on the first syllable, so the sound of the prefix won't be lost.
		Exception: because kilogram is the base unit, kilogram (not gram) is generally used in the denominator.
	lamar.colostate.edu /~hillger/brownridge.html (3745 words)

	iSYSTEM - In-circuit Emulators for Embedded Systems (Site not responding. Last check: 2007-11-02)
		The iC2000 development systems start with a Base Unit which is responsible for power distribution, control of the modules and high-speed PC communication.
		In addition to the regular Base Unit, there is one more Base Unit available: the Base Unit II with additional USB as standard communication interface and Ethernet as option.
		All iC2000 Base Units are packaged in a rugged, compact case ideal for desktop or lab use.
	www.isystem.com /Products/Emulators/iC2000/Base.htm (293 words)

	Units - Nellis AFB (Site not responding. Last check: 2007-11-02)
		The USAFWFC oversees operations of the 57th Wing, 98th Range Wing, and 99th Air Base Wing at Nellis AFB, NV, the UAV Battlelab at Creech AFB, NV, the 53rd Wing at Eglin Air Force Base, Fla., the AFC2TIG at Hurlburt Field, FL and the AWB at Mountain Home AFB, Idaho.
		Combat units from the United States and several allied countries engage in combat training scenarios conducted within the Nellis Range Complex.
		In October 1995, the "99th Wing" deactivated and was reactivated at Nellis, as the 99th ABW and today it serves as the host wing for the base.
	www.nellis.af.mil /units.htm (3427 words)

	[No title]
		Notation for Units of Measurement and Dim-Numbers ---------------------------------------------------- A simple unit of measurement is written as a sequence of alphabetic chars where case is significant: e.g.
		Unit expressions constructed from defined simple units may be used for input of dim-numbers and will be automatically be generated for output of results: E.g.
		Thus you may control which unit of measurement is used for a dim-number of a certain measurement.
	www.isi.edu /isd/LOOM/documentation/measures-usage.text (2188 words)

	NIST Metric Information and Conversions: Special Pub 814 (Site not responding. Last check: 2007-11-02)
		In the first column, the symbols of the SI base units are shown in rectangles, with the name of the unit shown toward the upper left of the rectangle and the name of the associated base quantity shown in italic type below the rectangle.
		Two SI derived units with special names and symbols, the radian, symbol rad, and the steradian, symbol sr (bottom of the third column of the diagram), are shown without any connection to SI base units—either direct or through other SI derived units.
		The transition to use of metric units in Government publications should be made as publications are revised on normal schedules or new publications are developed, or as metric publications are required in support of metric usage pursuant to paragraph (a) of this section.
	ts.nist.gov /ts/htdocs/200/202/pub814.htm (6956 words)

	Lesson 2-1 The International System of Measurements
		Units that are made up of some combination of SI base units are called Derived Units.
		Prefixes are used with the base units in order to increase or decrease the value that they represent.
		Table 1.3 represents some of the most common prefixes, their symbols, and the number that is used to multiply the base factor by.
	www.fordhamprep.com /gcurran/sho/sho/lessons/lesson21.htm (293 words)

	Eglin Air Force Base Guide - Units
		The Air Armament Center, in partnership with close to 50 associate units, is the heart of the team that covers the complete weapon-system life-cycle from concept through development, acquisition, experimental testing, procurement, operational testing and final employment in combat.
		Colonel Edmond B. Keith is the commander, 96th Air Base Wing, Air Force Materiel Command, Eglin AFB, Fla. As Eglin’s host wing commander, he is responsible for the Department of Defense’s largest installation, 724 square miles (slightly smaller than the state of Rhode Island), facilities and equipment valued in excess of $13B.
		Leadership skills are taxed when conducting small unit operations in a simulated combat environment by the daily challenges students encounter including severe weather, swampy terrain, periods of hunger, mental and physical fatigue, as well as emotional stress.
	www.united-publishers.com /EglinGuide/units.html (4773 words)

	ASA April 2000 Newsletter
		The unit value is the relative value unit (RVU), which is composed of three factors: 1) physician work, 2) practice expense and 3) malpractice.
		Base plus mean time units (base + time) for each anesthesia CPT code are multiplied by the anesthesia CF and then divided by the surgical CF.
		Calculating relative value units for anesthesia services on the RBRVS allows you to compare yourself to other specialties for purposes of measuring productivity, allocating practice expenses, analyzing reimbursement trends and managed care contracts, making budgetary projections and distributing capitated funds, as noted in the introduction to the article.
	www.asahq.org /Newsletters/2000/04_00/metcalcu0400.html (2743 words)

	Physics reference: SI units
		The composition of base units that comprise the unit in question.
		This is a polynomial-like combination of the eight elementary and supplementary units: kg, m, s, A, K, rad, cd, and sr.
		The unit ohm is actually represented with a Greek capital letter Omega, but is represented as a capital letter O throughout these pages.
	www.alcyone.com /max/reference/physics/units.html (368 words)

	BIPM - SI
		The base units are a choice of seven well-defined units which by convention are regarded as dimensionally independent: the metre, the kilogram, the second, the ampere, the kelvin, the mole, and the candela.
		Derived units are those formed by combining base units according to the algebraic relations linking the corresponding quantities.
		The names and symbols of some of the units thus formed can be replaced by special names and symbols which can themselves be used to form expressions and symbols of other derived units.
	www.bipm.org /en/si (178 words)

	Ramey AFB Historical Association - History
		He suggested that a suitable air base and auxiliary landing fields be constructed on the island, but that the Air Corps be limited to minimum strength required for maintenance, with a provision to send combat units to Puerto Rico, if and when, the situation demanded.
		By this time, base operations were more streamlined, but the aircraft were returning from the war theaters were in much poorer condition than during the previous year, and many needed extensive repairs before being ready for the long flights to their destinations.
		Base tenant units were also unaffected by the move, merely transferring their support to the new wing.
	www.rameyafb.org /history.html (9801 words)

	eFunda: SI Base Units
		The International System of Units (SI), the modern metric system of measurement, has long been the language universally used in science.
		These are non-dimensional units that are sometimes included in the dimensional expression of a unit for clarity purposes.
		The meter is the length of the path traveled by light in vacuum during a time interval of 1/299,792,458 second.
	www.efunda.com /units/si_base_units.cfm (373 words)

	Metric System Units
		There are three major parts to the metric system: the seven base units, the prefixes and units built up from the base units.
		An interesting fact about the kilogram is that it is the only SI base unit to incorporate a prefix.
		The amount of a substance of specified chemical formula, containing the same number of formula units (molecules, atoms, ions, electrons, etc.) as there are in 0.012 kilograms (exactly) of the pure nuclide carbon-12.
	dbhs.wvusd.k12.ca.us /webdocs/Metric/Metric-Units.html (1269 words)

	BEAR STEARNS COMPANIES INC - BSC Unscheduled Material Events (8-K) EXHIBIT 10.1
		The Earnings Units shall be credited, in accordance with Section 5.10 of the Plan, in the form of additional CAP Units.
		Any Replacement Units shall be subject to the same terms and conditions, including the vesting provisions hereof and the provisions of Article III hereof, as are applicable to the underlying Base Units.
		The granting of the CAP Units shall not constitute or be evidence of any agreement or understanding, express or implied, that Participant has a right to continue as an officer or employee of the Company or a subsidiary for any period of time, or at any particular rate of compensation.
	sec.edgar-online.com /2005/01/04/0000914121-05-000003/section6.asp (1682 words)

	Base Units
		Before base cabinets are installed, draw a level line
		line previously drawn for the location of the wall units.
		the base cabinet is level on uneven floor surfaces.
	www.tpub.com /content/construction/14045/css/14045_177.htm (288 words)

	Yokota AB, Japan :: Public (Site not responding. Last check: 2007-11-02)
		I am extremely proud of the job our Airmen perform here, promoting peace and stability by projecting air power into one of the most important regions in the world.
		I am also proud of the strong bond we have with our host nation of Japan and the close friendships we've developed with the communities around the base.
		Their ongoing support is essential to the success of our missions here at Yokota, and we will continue to work closely with our Japanese neighbors and the members of the Japan Self-Defense Force to serve the peaceful interests of both our nations.
	www.yokota.af.mil (145 words)

	<<UK Computer shop,Computer systems & PC Base units>> (Site not responding. Last check: 2007-11-02)
		Alternately please feel free to try our extremely popular system configurator for an instant price Base unit quote.
		We are a family owned and managed business based in Kent (UK) we started as a PC repair service in 1995 and have continued to develop to suit the ever changing computer environment, 1998 saw the launch of our website and through reputation alone we now receive thousands of hits a day.
		We view every customer as a customer for life and we work hard to make sure your online shopping experience is the smoothest, most pleasurable online purchase possible.
	www.gingerpcs.co.uk (221 words)

	Physics Fundamentals
		This interactive lesson addressees the need and use of fundamental units.
		This interactive lesson deals with basic metric units and the Derived Unit name.
		This is the ultimate tool for converting one unit into another unit.
	www.hazelwood.k12.mo.us /~grichert/sciweb/basics1.htm (238 words)

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