longitude determination method

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• Longitude — For Dava Sobel s book about John Harrison, see Longitude (book). For the adaptation of Sobel s book, see Longitude (TV series). Map of Earth Longitude (λ) Lines of longitude appear vertical with varying curvature in this projection, but are… …   Wikipedia

• Longitude prize — The Longitude Prize was a reward offered by the British government through an Act of Parliament in 1714 for a simple and practical method for the precise determination of a ship s longitude. The prize was administered by the Board of… …   Wikipedia

• History of longitude — The history of longitude is a record of the effort, by navigators and scientists over several centuries, to discover a means of determining longitude. The measurement of longitude is important to both cartography and navigation. Historically, the …   Wikipedia

• Orbit determination — is a branch of astronomy specialised in calculating, and hence predicting, the orbits of objects such as moons, planets, and spacecraft . These orbits could be orbiting the Earth, or other bodies. The determination of the orbit of newly observed… …   Wikipedia

• Geodetic astronomy — is the application of astronomical methods into s and technical projects of geodesy.The most important topics are: * Establishment of geodetic datum systems (e.g. ED50) or at expeditions * apparent places of stars, and their proper motions *… …   Wikipedia

• Timeline of time measurement technology — Timeline of time measurement technology* 270 BC Ctesibius builds a popular water clock, called a clepsydra * 46 BC Julius Caesar and Sosigenes develop a solar calendar with leap years * 1000s Sets of hourglasses were maintained by ship s pages to …   Wikipedia

• Global Positioning System — GPS redirects here. For other uses, see GPS (disambiguation). Geodesy Fundamentals …   Wikipedia

• Nevil Maskelyne — For other people named Nevil Maskelyne, see Nevil Maskelyne (disambiguation). Rev. Dr Nevil Maskelyne Born 6 October 1732 …   Wikipedia

• geoid — geoidal, adj. /jee oyd/, n. 1. an imaginary surface that coincides with mean sea level in the ocean and its extension through the continents. 2. the geometric figure formed by this surface, an ellipsoid flattened at the poles. [1880 85; < Gk… …   Universalium

• Navigation — This article is about determination of position and direction on or above the surface of the earth. For other uses, see Navigation (disambiguation). Table of geography, hydrography, and navigation, from the 1728 Cyclopaedia. Navigation is the… …   Wikipedia

• Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium