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Pierre De Rivaz
Pierre de Rivaz (17111772) was a French clockmaker of the 18th century, from Saint-Gingolph. He built a clock in 1740 that was powered by variations in air temperature and pressure, a type of Atmos clock. See also *Marine chronometer A marine chronometer is a precision timepiece that is carried on a ship and employed in the determination of the ship's position by celestial navigation. It is used to determine longitude by comparing Greenwich Mean Time (GMT), or in the modern ... References {{DEFAULTSORT:Rivaz, Pierre De French clockmakers 1711 births 1772 deaths ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rivaz Marine Clock Circa 1750
Rivaz (pro. ree-vah) is a municipality in the canton of Vaud in Switzerland, located in the district of Lavaux-Oron. History Rivaz is first mentioned in 1138 as ''Ripa''. Geography Rivaz has an area, , of . Of this area, or 67.7% is used for agricultural purposes, while or 0.0% is forested. Of the rest of the land, or 22.6% is settled (buildings or roads), or 6.5% is either rivers or lakes.Swiss Federal Statistical Office-Land Use Statistics 2009 data accessed 25 March 2010 Of the built up area, housing and buildings made up 9.7% and transportation infrastructure made up 12.9%. Out of the forested land, all of the forested land area is covered with heavy forests. Of the agricultural land, 0.0% is used for growing crops, while 67.7% is used for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saint-Gingolph
Saint-Gingolph is a small town situated on the south bank of Lake Geneva (Lac Léman). It sits at the France–Switzerland border and is administratively divided into Saint-Gingolph, Switzerland, Saint-Gingolph, Valais (Switzerland) and Saint-Gingolph, Haute-Savoie (France). Its name is derived from the eighth-century saint Gangulphus, who is said to have lived as a hermit in this region. Its division at the Morge dates from 1569: as the municipal Web site explains, it is one town consisting of a single parish (the church and cemetery are on the French side) with two municipal administrations and two distinct legal systems. Saint-Gingolph is located a short distance from Évian-les-Bains, Monthey and Montreux. It is accessible by road, rail or boat. Built on an alluvial cone of the Morge (Lake Geneva), Morge, a frontier mountain stream, St. Gingolph is surrounded by mountains and has approximately 8 km of shore-line alongside the lake. History The town played an important role ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atmos Clock
Atmos is the brand name of a mechanical torsion pendulum clock manufactured by Jaeger-LeCoultre in Switzerland which does not need to be wound manually. It gets the energy it needs to run from temperature and atmospheric pressure changes in the environment, and can run for years without human intervention. The clock is driven by a mainspring, which is wound by the expansion and contraction of liquid and gaseous ethyl chloride in an internal hermetically sealed metal bellows. The ethyl chloride vaporises into an expansion chamber as the temperature rises, compressing a spiral spring; with a fall in temperature the gas condenses and the spiral spring expands, winding the mainspring. This motion constantly winds the mainspring. A temperature variation of only one degree in the range between and , or a pressure variation of 3 mmHg, was calculated to provide energy for two days' operation for an early prototype, while for a more recent Atmos 540 model the corresponding value has been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Chronometer
A marine chronometer is a precision timepiece that is carried on a ship and employed in the determination of the ship's position by celestial navigation. It is used to determine longitude by comparing Greenwich Mean Time (GMT), or in the modern world its successor Coordinated Universal Time (UTC), and the time at the current location found from observations of celestial bodies. When first developed in the 18th century, it was a major technical achievement, as accurate knowledge of the time over a long sea voyage was vital for effective navigation, lacking electronic or communications aids. The first true chronometer was the life work of one man, John Harrison, spanning 31 years of persistent experimentation and testing that revolutionized naval (and later aerial) navigation and enabling the Age of Discovery and Colonialism to accelerate. The term ''chronometer'' was coined from the Greek words '' χρόνος (chronos)'' (meaning time) and ''meter'' (meaning measure) in 1713 by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Clockmakers
French (french: français(e), link=no) may refer to: * Something of, from, or related to France ** French language, which originated in France, and its various dialects and accents ** French people, a nation and ethnic group identified with France ** French cuisine, cooking traditions and practices Fortnite French places Arts and media * The French (band), a British rock band * "French" (episode), a live-action episode of ''The Super Mario Bros. Super Show!'' * ''Française'' (film), 2008 * French Stewart (born 1964), American actor Other uses * French (surname), a surname (including a list of people with the name) * French (tunic), a particular type of military jacket or tunic used in the Russian Empire and Soviet Union * French's, an American brand of mustard condiment * French catheter scale, a unit of measurement of diameter * French Defence, a chess opening * French kiss, a type of kiss involving the tongue See also * France (other) * Franch, a surname * Fren ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1711 Births
In the Swedish calendar it was a common year starting on Tuesday, one day ahead of the Julian and ten days behind the Gregorian calendar. Events January–March * January – Cary's Rebellion: The Lords Proprietor appoint Edward Hyde to replace Thomas Cary, as the governor of the North Carolina portion of the Province of Carolina. Hyde's policies are deemed hostile to Quaker interests, leading former governor Cary and his Quaker allies to take up arms against the province. * January 24 – The first performance of Francesco Gasparini's most famous opera ''Tamerlano'' takes place at the Teatro San Cassiano in Venice. * February – French settlers at ''Fort Louis de la Mobile'' celebrate Mardi Gras in Mobile (Alabama), by parading a large papier-mache ox head on a cart (the first Mardi Gras parade in America). * February 3 – A total lunar eclipse occurs, at 12:31 UT. * February 24 ** Thomas Cary, after declaring himself Governor of North Car ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
