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Encyclopedia: Metre (2628 words) |
 | Although it was later determined that the first prototype metre bar was short by a fifth of a millimetre due to miscalculation of the flattening of the earth, this length became the standard. |
| The Metre Convention (Convention du Mètre) of 1875 mandated the establishment of a permanent International Bureau of Weights and Measures (BIPM: Bureau International des Poids et Mesures) to be located in Sèvres, France. |
| In 1893, the standard metre was first measured with an interferometer by Albert A. Michelson, the inventor of the device and an advocate of using some particular wavelength of light as a standard of distance. |
| Metric Convention (3578 words) |
| The Convention du Mètre, in English called the Metric Convention, Metrical Convention, Metre Convention, Convention of the Metre, or Treaty of the Meter, was signed in Paris on May 20, 1875 by 17 countries, including the US. |
| All states which are represented at the international metre commission which met at Paris in 1872, whether they are contracting parties to the present convention or not, shall receive the prototypes that they may have ordered, which shall be delivered to them in the condition guaranteed by the said international commission. |
| It shall be the duty of the international committee mentioned in Article 3 of the convention, and composed as provided in Article 8 of the regulations, to receive and compare the new prototypes one with the other, in accordance with the scientific decisions of the international commission of 1872, and of its permanent committee. |
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