Construction of the Observatoire de Paris began in 1667 by architect Claude Perrault and was complet

Construction of the Observatoire de Paris began in 1667 by architect Claude Perrault and was completed in 1671. The building is oriented good deals on car rentals to the four cardinal points. The meridian of Paris runs through the middle of the building.
On February good deals on car rentals 3, 1851, Leon Foucault first publicly exhibited his now famous Foucault Pendulum in the Observatoire de Paris. Prince Louis Napoleon, the future Napoleon III, asked for another demonstration on March 26, 1851, to be presented in the Panthéon . This revolutionary demonstration provided the proof, good deals on car rentals and still does, that the earth does, in fact, spin on its axis.
Since 1855, Foucault's Pendulum has been hanging and swinging in the Musée des Arts et Métiers . During the recent renovation of this building, the 67 meter Pendulum had a temporary home in the Pantheon. It has since returned to the museum where it can be viewed.
Also included on these tours is the first "speaking clock", created by E. Esclangon good deals on car rentals in 1933, as are the atomic clocks which set the time standard for the world, a function of the Bureau International de l'Heure, the International Time Bureau.
In 1995, to honor François Arago, director of the Observatory of Paris from 1834-1853, the Netherland artist Jean Dibbets marked out the north-south meridian good deals on car rentals line that runs through Paris with 135 bronze medallions of 12 cm in diameter.
They are set into the ground in such places as the Garden of the Luxembourg Palace , the Louvre and the Palais Royal . Inscribed good deals on car rentals on them is the name "Arago" and the letters "N" and "S", indicating north and south directions. If you follow these medallions to find the Inverted Pyramid of the Louvre Museum, good deals on car rentals or the Church of Saint Sulpice , you will miss them both by 100 meters.
The brass line running through the floor in the Church of Saint Sulpice is neither the Zero Meridian nor the so-called "Rose Line". What has been incorrectly referred to is an indicator line, part of the gnomon, a measuring tool installed good deals on car rentals here in 1727, used to pinpoint the vernal equinox and thereby determining Easter, which is the first Sunday after the first full moon after the vernal, Spring, equinox.
The Paris Zero Meridian line, established in 1667, was used for centuries to calculate positions for naval vessels and distances, as well as setting the time standard. In 1884, a new international standard was designed, establishing the Zero Meridian good deals on car rentals at Greenwich, England.
However, it wasn't until 1911 that France accepted the new meridian and established Greenwich Mean Time (GMT) as the standard in France. The meridian through Paris is now measured at longitude 2°20'14.025" east.
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