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Longitude (λ); Lines of longitude appear vertical with varying curvature in this projection, but are actually halves of great ellipses, with identical radii at a given latitude.: Latitude (φ); Lines of latitude appear horizontal with varying curvature in this projection; but are actually circular with different radii. All locations with a given latitude are collectively referred to as a ...
The longitude has the symbol of lambda and is another angular coordinate defining the position of a point on a surface of earth. The longitude is defined as an angle pointing west or east from the Greenwich Meridian, which is taken as the Prime Meridian. The longitude can be defined maximum as 180° east from the Prime Meridian and 180° west ...
Latitude and longitude, coordinate system by means of which the position or location of any place on Earth's surface can be determined and described. Latitude is a measurement of location north or south of the Equator. Longitude is a similar measurement east or west of the Greenwich meridian.
Learn the meaning of longitude as the angular distance measured on a great circle from the prime meridian. See examples, word history, and related words for longitude.
Learn what longitude is, how it is measured, and why it is important for navigation and geodesy. Find out the difference between the prime meridian and the international reference meridian, and how GPS satellites and stations help determine longitude.
The longitude line of 0 degrees is known as the Prime Meridian and it divides the world into the Eastern Hemisphere and the Western Hemisphere. A location's longitude is expressed in degrees (°), minutes ('), and seconds ("). A positive longitude value indicates a location in the Eastern Hemisphere, while a negative value indicates a ...
Longitude is the measurement east or west of the prime meridian.Longitude is measured by imaginary lines that run around Earth vertically (up and down) and meet at the North and South Poles. These lines are known as meridians.Each meridian measures one arc degree of longitude. The distance around Earth measures 360 degrees.
Since a sphere has 360 degrees, the Earth is divided into 360 longitudes. The meridian opposite the Prime Meridian (on the other side of the Earth) is the 180° longitude and is known as the antimeridian. Modern timekeeping systems use longitudes as references to keep time. Time zones are defined by the Prime Meridian and the longitudes.
Learn the definition, history, and calculation of longitude, the geographical point of direction that identifies how east or west a position is on Earth. Find out how longitude is measured in degrees, minutes, seconds, and radians, and how it relates to time and latitude.
A geographic coordinate system (GCS) is a spherical or geodetic coordinate system for measuring and communicating positions directly on Earth as latitude and longitude. [1] It is the simplest, oldest and most widely used type of the various spatial reference systems that are in use, and forms the basis for most others. Although latitude and longitude form a coordinate tuple like a cartesian ...