Pavillon de Breteuil

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Pavillon de Breteuil
BIPM courtyard.jpg
Pavillon de Breteuil
Former names
  • Trianon de Saint-Cloud
  • Pavillon du Mail
  • Pavillon d'Italie
General information
Location Parc de Saint-Cloud
Address12 bis Grande Rue, Sèvres [1]
Town or city Saint-Cloud
CountryFrance
Coordinates 48°49′45.55″N2°13′12.64″E / 48.8293194°N 2.2201778°E / 48.8293194; 2.2201778
Inaugurated1672
Design and construction
Architect(s) Thomas Gobert

The Pavillon de Breteuil lies in the southeastern section of the Parc de Saint-Cloud in Saint-Cloud, France, to the west of Paris. It is listed in France as a historic monument. Since 1875 it has been the headquarters of the International Bureau of Weights and Measures (BIPM).

Contents

History

Built overlooking the River Seine by Thomas Gobert in the parkland surrounding the Château de Saint-Cloud, the building was inaugurated by Louis XIV in 1672 and first known as the Trianon de Saint-Cloud. [2] The Trianon was renamed as the Pavillon du Mail in 1743 after being slightly modified. [3]

In 1785 the whole of the château estate (the Domaine de Saint-Cloud), including the pavillon, was acquired by Marie Antoinette, the queen of Louis XVI. [3] For his part in arranging the acquisition of the pavillon, the queen granted Louis Auguste Le Tonnelier de Breteuil the use of the estate, and he made the pavillon his official residence, and it was renamed to the Pavillon de Breteuil. [3]

During the French Revolution (1789–99), Breteuil fled from France, and the state took ownership of the pavillon. [3] Following the revolution, the pavillon was renovated by Napoleon, renamed as the Pavillon d'Italie. [3] Until the fall of Napoleon in 1815, it was used as accommodation for visiting royalty. [3]

Following another restoration started in 1817, the pavillon, now the Pavillon de Breteuil again, was used as the official residence of a series of officials and dignitaries up until the start of the Franco-Prussian War (1870–71). [3] In 1870, as a result of shelling during that war, the château was destroyed and the pavillon was badly damaged. [2]

Usage

In 1875, the Diplomatic Conference of the Metre in Paris, which had been convened by the French government to try to reach an agreement on international collaboration for the maintenance and development of the metric system, established the International Bureau of Weights and Measures (BIPM) To facilitate its work on the formulation of international standards, the French government offered the use of a site in the Domaine de Saint-Cloud, which included the badly war-damaged Pavillon de Breteuil. [3]

Following an agreement signed on 25 April 1969 with the French government, functional privileges and immunities were granted to the BIPM as an international organisation operating on the site of the Pavillon de Breteuil. [4] [5]

It is the home of the International Prototype of the Kilogram, which lost its status as a standard on 20 May 2019.

Since 1900, the building has been listed as part of the Domaine national de Saint-Cloud as an historic monument in France. [6]

Related Research Articles

<span class="mw-page-title-main">International Bureau of Weights and Measures</span> Intergovernmental measurement science and measurement standards setting organisation

The International Bureau of Weights and Measures is an intergovernmental organisation, through which its 59 member-states act on measurement standards in areas including chemistry, ionising radiation, physical metrology, as well as the International System of Units (SI) and Coordinated Universal Time (UTC). It is based in Saint-Cloud, near Paris, France. The organisation has been referred to as IBWM in older literature.

The General Conference on Weights and Measures is the supreme authority of the International Bureau of Weights and Measures (BIPM), the intergovernmental organization established in 1875 under the terms of the Metre Convention through which member states act together on matters related to measurement science and measurement standards. The CGPM is made up of delegates of the governments of the member states and observers from the Associates of the CGPM. It elects the International Committee for Weights and Measures as the supervisory board of the BIPM to direct and supervise it.

<span class="mw-page-title-main">Litre</span> Unit of volume

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<span class="mw-page-title-main">Metre</span> SI unit of length

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<span class="mw-page-title-main">Metre Convention</span> 1875 international treaty

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<span class="mw-page-title-main">Metrology</span> Science of measurement and its application

Metrology is the scientific study of measurement. It establishes a common understanding of units, crucial in linking human activities. Modern metrology has its roots in the French Revolution's political motivation to standardise units in France when a length standard taken from a natural source was proposed. This led to the creation of the decimal-based metric system in 1795, establishing a set of standards for other types of measurements. Several other countries adopted the metric system between 1795 and 1875; to ensure conformity between the countries, the Bureau International des Poids et Mesures (BIPM) was established by the Metre Convention. This has evolved into the International System of Units (SI) as a result of a resolution at the 11th General Conference on Weights and Measures (CGPM) in 1960.

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Milli is a unit prefix in the metric system denoting a factor of one thousandth (10−3). Proposed in 1793, and adopted in 1795, the prefix comes from the Latin mille, meaning one thousand. Since 1960, the prefix is part of the International System of Units (SI).

<span class="mw-page-title-main">Deci-</span>

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<span class="mw-page-title-main">Parc de Saint-Cloud</span> National estate in France near Paris

The Parc de Saint-Cloud, officially the Domaine national de Saint-Cloud, is a domaine national located mostly within the Saint-Cloud commune, in the Hauts-de-Seine department, near Paris, France.

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The angstrom or ångström is a metric unit of length equal to 10−10 m; that is, one ten-billionth (US) of a metre, a hundred-millionth of a centimetre, 0.1 nanometre, or 100 picometres. Its symbol is Å, a letter of the Swedish alphabet. The unit is named after the Swedish physicist Anders Jonas Ångström (1814–1874).

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Thomas Gobert was a 17th-century French architect and engineer.

References

  1. "How to Get to the BIPM". BIPM. Retrieved 8 February 2010.
  2. 1 2 P. Tavella; M.J.T. Milton; M. Inguscio, eds. (2017). Metrology: from Physics Fundamentals to Quality of Life. IOS Press. ISBN   978-1-61499-817-4.
  3. 1 2 3 4 5 6 7 8 Quinn, Terry (2012). From Artefacts to Atoms: The BIPM and the Search for Ultimate Measurement Standards. Oxford University Press. ISBN   978-0-19-530786-3.
  4. Rapport fait au nom de la commission des affaires étrangères sur le projet de loi autorisant l’approbation d’un accord relatif au siège du Bureau international des poids et mesures et à ses privilèges et immunités sur le territoire français et sur le projet de loi autorisant l’approbation de l’accord entre le Gouvernement de la République française et le Comité international des poids et mesures portant amendement de l’accord du 25 avril 1969 relatif au siège du Bureau international des poids et mesures et à ses privilèges et immunités sur le territoire français
  5. Loi n°2008-738 du 28 juillet 2008 autorisant l'approbation de l'accord entre le Gouvernement de la République française et le Comité international des poids et mesures portant amendement de l'accord du 25 avril 1969 relatif au siège du Bureau international des poids et mesures et à ses privilèges et immunités sur le territoire français
  6. "Domaine national de Saint-Cloud (également sur communes de Sèvres, Ville-d'Avray, Marnes-la-Coquette)". Ministère de la Culture (in French). Retrieved 8 February 2010.