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Delambre was born in Amiens, France. In collaboration with Pierre Méchain, his greatest achievement was the measurement of the length of the meridian between Dunkerque and Barcelona. This portion of the meridian, which also passes through Paris, was to serve as a basis for the calculation of the length of the quarter meridian, connecting the North Pole with the Equator. The expedition lasted from 1792Events January 25 The London Corresponding Society is founded. February 20 The Postal Service Act, establishing the United States Post Office Department, is signed by President George Washington. March 16 King of Sweden Gustav III Shot in the back by Jaco to 1799Events March 1 Federalist James Ross becomes President Pro Tempore of the United States Senate. March 7 Napoleon captures Jaffa in Palestine and his troops proceed to kill more than 2,000 Albanian captives. March 29 New York passes a law aimed at graduall. Its purpose was to establish a universally accepted foundation for the definition of the metreFor other uses of "metre" and "meter", see Metre (disambiguation). The metre is the basic unit of length in the International System of Units (SI: Systeme International d'Unites). It is defined as the length of the path travelled by light in absolute vacu, which was to be defined as 1 / 10,000,000 of the distance from the North Pole to the equator.
Delambre craterDelambre is a lunar impact crater that lies to the southwest of Mare Tranquillitatis, in the central highland region. To the west are the crater pair of Theon Junior and Theon Senior, the later being more distant and located to the northwest. The rim of D is named for him on the MoonFor other moons in the solar system see natural satellite. For other uses see Moon (disambiguation). The Moon is the only natural satellite of Earth. It has no formal name other than "The Moon" although it is occasionally called Luna ( Latin for moon to d.