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Topic: Bureau International des Poids et Mesures

Related Topics

International Bureau of Weights and Measures

Metre Convention

Conference Generale des Poids et Mesures

History of Weights and Measures

Metre

SI

International Atomic Time

Kilogram

Coordinated Universal Time

Second

SI base unit

Universal time

UTC

Angstrom

SI prefix

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	International Bureau of Weights and Measures - Wikipedia, the free encyclopedia
		It is based at the Pavillon de Breteuil in Sèvres, France, where it enjoys extraterritorial status.
		The task of the BIPM is to ensure world-wide uniformity of measurements and their traceability to the International System of Units (SI).
		It does this with the authority of the Convention du Mètre, a diplomatic treaty between fifty-one nations (as of 2005), and it operates through a series of Consultative Committees, whose members are the national metrology laboratories of the Member States of the Convention, and through its own laboratory work.
	en.wikipedia.org /wiki/Bureau_International_des_Poids_et_Mesures (197 words)

	Metric Convention
		The operation of the international bureau shall be under the exclusive direction and supervision of an international committee of weights and measures, which latter shall be under the control of a general conference for weights and measures, to be composed of the delgates of all the contracting governments.
		The entire expense of the construction and outfit of the international bureau of weights and mesasures, together with the annual cost of its maintenance and the expenses of the committee, shall be defrayed by contributions from the contracting states, the amount of which shall be computed in proportion to the actual population of each.
		The international committee shall prepare detailed regulations for the organization and the labors of the bureau, and shall fix the amounts to be paid for the performance of the extraordinary duties provided for in article 6 of this convention.
	lamar.colostate.edu /~hillger/laws/metric-convention.html (3578 words)

	[No title]
		In the 1870s and in light of modern precision, a series of international conferences were held to devise new metric standards.
		Conférence Générale des Poids et Mesures) defined the metre in the new
		The original international prototype of the metre is still kept at the BIPM under the conditions specified in
	en-cyclopedia.com /wiki/Metre (605 words)

	Bureau International des Poids et Mesures
		In 1960, the 11th General Conference on Weights and Measures adopted the name Système International d'Unités (International System of Units) for the recommended practical system of units of measurement.
		As released by ISI®, the 2004 Impact Factor for Metrologia is 1.314.
		As of 14 September 2005, Kazakhstan is an Associate of the CGPM.
	www.bipm.fr (78 words)

	Chemistry International
		BIPM is headquartered in the Pavillon de Breteuil, a historic and beautiful chateau overlooking the Seine at Sèvres, on the outskirts of Paris.
		The Bureau International des Poids et Mesures at Pavillon de Breteuil, Paris, France.
		CCU is responsible for advising the International Committee on changes and developments to be made to the International System of Units (SI), and particularly on choosing the standards that define the base units of the SI.
	www.iupac.org /publications/ci/2002/2402/pscience.html (2077 words)

	Bureau International des Poids et Mesures : BIPM
		Bureau International des Poids et Mesures : BIPM
		The Bureau International des Poids et Mesures (International Bureau for Weights and Measures, or BIPM) is one of the three organizations established to maintain the SI system under the terms of the Metre Convention.
		the Comité International des Poids et Mesures[?] (CIPM).
	www.fastload.org /bi/BIPM.html (114 words)

	Nat' Academies Press, International Network of Global Fiducial Stations: Science and Implementation Issues (1991)
		It replaces the International Polar Motion Service (IPMS) and the earth rotation section of the Bureau International de l'Heure (BIH); the activities of BIH on time are continued at Bureau International des Poids et Mesures (BIPM).
		IERS consists of a Central Bureau and Coordinating Centers for each of the principal observing techniques, and it is supported by many other organizations that contribute to the tasks of observation and data processing.
		The Directing Board is composed of representatives of: the International Astronomical Union, the International Association of Geodesy/International Union of Geodesy and Geophysics, the Federation of Astronomical and Geophysical Data Analysis Services, the Central Bureau, and each of the Coordinating Centers.
	www.nap.edu /books/0309045436/html/123.html (1034 words)

	Re: WHY ON THE KELVIN TEMPERATURE SCALE IS THERE NO DEGREE SYMBOL?
		As well as founding the BIPM and laying down the way in which the activities of the BIPM should be financed and managed, the Metre Convention established a permanent organizational structure for member governments to act in common accord on all matters relating to units of measurement.
		The Convention, modified slightly in 1921, remains the basis of all international agreement on units of measurement.
		The International System of Units (SI) The 11th Conférence Générale des Poids et Mesures (1960) adopted the name Système International d'Unités (International System of Units, international abbreviation SI), for the recommended practical system of units of measurement.
	www.madsci.org /posts/archives/jan2001/980803145.Ph.r.html (1346 words)

	Units: The International System (Site not responding. Last check: 2007-11-07)
		The International System is called the SI, using the first two initials of its French name Système International d'Unités.
		International Bureau of Weights and Measures (BIPM, for Bureau International des Poids et Mesures), and it is updated every few years by an international conference, the General Conference on Weights and Measures (CGPM, for Conférence Générale des Poids et Mesures), attended by representatives of all the industrial countries and international scientific and engineering organizations.
		The SI does not allow these prefixes to be used for binary multiples, such as the use of "kilobit" to mean 1024 bits instead of 1000.
	aplacetolearnaplacetogrow.com /math_stuff/how_many_dictionary/sipm.html (830 words)

	Bureau International des Poids et Mesures\|International Bureau for Weights and Measures Information (Site not responding. Last check: 2007-11-07)
		The International* (passenger train)International (discontinued April 25, 2004) was a rail transportpassenger train operating between Toronto, OntarioToronto and Chicago, IllinoisChicago.
		The International* Space Station is a current space station preceding the Mir space station.
		It is common in the USA to refer to ''international'' to mean "outside of the United States".
	www.echostatic.com /Bureau_International_des_Poids_et_Mesures\|International_Bureau_for_Weights_and_Measures.html (141 words)

	International Bureau of Weights and Measures (Site not responding. Last check: 2007-11-07)
		The International Prototype of the Kilogram, the sole remaining physical prototype of an SI unit, is kept at the Bureau, as well the International Prototype of the Meter.
		The Bureau is an intergovernmental organization supported by the member nations in order to maintain and improve standards of measurement.
		The BIPM is responsible to the International Committee for Weights and Measures (CIPM).
	www.sizes.com /units/BIPM.htm (211 words)

	BAM \| EU Notification and accreditation ... (Site not responding. Last check: 2007-11-07)
		The signatories to the Mutual Recognition Arrangement of the Comité International des Poids et Mesures (CIPM MRA) for the recognition of national standards, calibration and measurement certificates of national motrology institutes can be found in a database of the Bureau International des Poids et Mesures database (BIPM) (kcdb.bipm.org, Appendix A).
		International intercomparisons among the national metrology institutes, whose results are published in the Internet (kcdb.bipm.org, Appendix B),
		Data on the calibration and measurement capabilities of metrology institutes, which are peer-reviewed by international teams of experts prior to publication (kcdb.bipm.org,
	www.bam.de /english/expertise/attestations_of_competence/attest_of_competence_nn_i.htm (154 words)

	SI base unit - Wikipedia, the free encyclopedia
		The following are the fundamental units from which all others are derived, they are dimensionally independent.
		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).
		Note that the kilogram is the only base unit with a prefix; the gram is defined as a derived unit, equal to 1/1000 of a kilogram; prefixes such as mega are applied to the gram, not the kg; e.g.
	en.wikipedia.org /wiki/SI_base_unit (529 words)

	Historical and international aspects of the SI
		The International System of Units, universally abbreviated SI (from the French Le Système International d'Unités), is the modern metric system of measurement.
		The SI was established in 1960 by the 11th General Conference on Weights and Measures (CGPM, Conférence Générale des Poids et Mesures).
		The CGPM is the international authority that ensures wide dissemination of the SI and modifies the SI as necessary to reflect the latest advances in science and technology.
	physics.nist.gov /cuu/Units/international.html (702 words)

	[No title] (Site not responding. Last check: 2007-11-07)
		Comparisons of primary standards are being used to derive international key comparison reference values and determine the degrees of equivalence between national standards.
		For those countries which do not have a primary standard, traceability internationally is assured by regular calibration of their secondary standards either by a primary standard laboratory or by the Bureau International des Poids et Mesures (BIPM) if they are members of the Metre Convention.
		To extend international traceability a link is made to the International Atomic Energy Agency (IAEA) by regular calibration of their secondary standards at the BIPM.
	www.srp-uk.org /srpcdrom/p4-5.doc (1509 words)

	Measurement
		That's not bad for a measurement made in the 1790's.) For a long time, the meter was precisely defined as the length of an actual object, a bar kept at the International Bureau of Weights and Measures in Paris.
		In recent years, however, the SI base units (with one exception) have been redefined in abstract terms so they can be reproduced to any desired level of accuracy in a well-equipped laboratory.
		Values of V(l), defined by the International Commission on Illumination (CIE), are available online from the Color and Vision Research Laboratories of the University of California at San Diego and the University of Tübingen, Germany.
	www.geocities.com /dtmcbride/tech/measurement.html (1354 words)

	The NIST Detector-Based Luminous Intensity Scale (ResearchIndex) (Site not responding. Last check: 2007-11-07)
		2 Bureau International des Poids et Mesures (context) - des, de la et al.
		2 Bureau International des Poids et Mesures (context) - des, Neuvieme et al.
		1 Bureau International des Poids et Mesures (context) - Wyszecki, Blevin et al.
	citeseer.ist.psu.edu /500857.html (560 words)

	Metric System
		On March 30, 1791, after a proposal by the Académie des sciences (Borda, Lagrange, Laplace, Monge and Condorcet), the Assembly finally chose that a metre would be a 1/10 000 000 of the distance between the north pole and the equator.
		In 1960, the 11th Conférence générale des Poids et Mesures (General Conference on Weigths and Measures) has set the 7 basic units of the Système international d'unités (SI), based on the metric system (decimal):
		The International System of Units: a page from the site of the National Physical Laboratory in the UK giving, among other things, the exact legal definition of the SI units.
	pro.wanadoo.fr /pierre.gay/EngPages/SysMetEN (641 words)

	Sidebar: Seven Units, Defined by Their Keepers (Site not responding. Last check: 2007-11-07)
		The text of the definitions is the same, word for word, as that published on the English-language Web site of the Bureau International des Poids et Mesures, the international standards body, www.bipm.org/enus/3_SI/base_units.
		"The kilogram is the unit of mass; it is equal to the mass of the international prototype of the kilogram."
		[Another NIST document says: "The standard for the unit of mass, the kilogram, is a cylinder of platinum-iridium alloy kept by the International Bureau of Weights and Measures near Paris.
	www.memagazine.org /backissues/april01/features/standard/sidebar.html (300 words)

	BIPM
		As a matter of policy, the U.S. Naval Observatory timescale, UTC(USNO), and its real-time implementation, Master Clock #2 (MC #2), are kept within a close but unspecified tolerance of the international atomic timescale published by the Bureau International des Poids et Mesures (International Bureau of Weights and Measures [BIPM]) in Sevres, France.
		The result of these corrections is another timescale, TAI (Temps Atomique International or International Atomic Time).
		Since most of these systems have global coverage and are widely used, there is need to approximate the international reference as closely as the state of the art allows - in real time.
	tycho.usno.navy.mil /bipm.html (569 words)

	Richard Davis (Site not responding. Last check: 2007-11-07)
		Most of his career at NIST was spent in the mass group, eventually as leader, where he developed improved techniques for mass and density determinations.
		1990 - Fellow, Bureau International des Poids et Mesures Sèvres, France.
		While at the BIPM he has developed a novel technique for determining the magnetic properties of finished mass standards that is now used in many other laboratories.
	einstein.stanford.edu /STEP/people/collaborators/data/rdavis.html (124 words)

	IAU 31 (Site not responding. Last check: 2007-11-07)
		International Astronomical Union Division 1 Fundamental astronomy, to which Commission 31 belongs.
		Bureau International des Poids et Mesures BIPM: Intergovernmental organization for metrology.
		Time and frequency activities may also be found in observatories, such as the USNO (which is hosting this Web site).
	tycho.usno.navy.mil /IAU31/links.html (97 words)

	Frequency of the methane-stabilized He−Ne laser at 88 THz measured to
		We have measured the frequency of methane-stabilized laser at 88 THz (3.39 µm) (ref. 1), by method which largely eliminates the uncertainties contributed by lower-frequency lasers used as transfer oscillators.
		This result is primarily of interest for proposed new definition of the metre in which the speed of light in vacuum (c
		Poids Mesures) 5th Session (1973); 6th Session (1979).
	www.nature.com /cgi-taf/DynaPage.taf?file=/nature/journal/v285/n5764/abs/285388a0.html (350 words)

	[No title]
		He is a physicist in the Time Section of the Bureau International des Poids et Mesures in Sèvres, where he helps evaluate and disseminate International Atomic Time (TAI) and Coordinated Universal Time (UTC).
		Ruth E. Neilan is Director of the IGS Central Bureau at the Jet Propulsion Laboratory in Pasadena, California.
		IGEX-98 was co-sponsored by the International Association of Geodesy (Commission VIII, International Coordination of Space Techniques for Geodesy and Geodynamics), the International GPS Service (IGS), the Institute of Navigation (ION), and the International Earth Rotation Service.
	igscb.jpl.nasa.gov /projects/iglos/ION99ppr.doc (5473 words)

	(IUCr) 1995 Report - IUPAC Interdivisional Committee on Nomenclature and Symbols (IDCNS) (Site not responding. Last check: 2007-11-07)
		IDCNS now supports a different approach to the classification of units, in which non-SI units would simply be listed without indication of status but with an account of their usage by various communities.
		The Chair reported that the 1994 recommendations would be reviewed further at the CCU meeting in April 1996 before they might be submitted to the Comité International des Poids et Mesures (CIPM) for final action.
		Authority to act in all matters touching on the demands for higher accuracy, wider range and greater diversity in measurement standards between nations has been given jointly to the Conference Générale des Poids et Mesures, the CIPM and the BIPM by the Convention du Mètre.
	bioinformatics.weizmann.ac.il /iucr-top/cexec/rep95/idcns.htm (542 words)

	Leap second in UTC (Site not responding. Last check: 2007-11-07)
		The Coordinated Universal Time (UTC, replacing GMT) is the reference time scale derived from The Temps Atomique International (TAI) calculated by the Bureau International des Poids et Mesures (BIPM) using a worldwide network of atomic clocks.
		UTC differs from TAI by an integer number of seconds; it is the basis of all activities in the world.
		According to international agreements, first preference is given to the opportunities at the end of December and June, and second preference to those at the end of March and September.
	hpiers.obspm.fr /eop-pc/earthor/utc/leapsecond.html (316 words)

	IGS/BIPM Call for Participation (Site not responding. Last check: 2007-11-07)
		The International GPS Service (IGS) and the Bureau International des Poids et Mesures (BIPM) have established a joint Pilot Project for Time and Frequency Comparisons using GPS.
		The goal of this Pilot Project is to investigate the use of GPS phase and code measurements to improve worldwide availability of accurate time and frequency.
		Close cooperation is expected with the Consultative Committee for Time and Frequency (CCTF) of the Comité International des Poids et Mesures (CIPM).
	igscb.jpl.nasa.gov /projects/gpst/gpst/call.html (705 words)

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