Geographic Coordinates: Latitude, Longitude, Equator, Tropic of Cancer, Capricorn, Hemispheres, Torrid, Temperate zone 2013
Geographic Coordinates system :
Geographic coordinate system is a coordinate system that enables every
location on the Earth to be specified by a set of numbers or letters.
The coordinates are often chosen such that one of the numbers represents
vertical position, and two or three of the numbers represent horizontal
position. A common choice of coordinates is latitude, longitude and
elevation.
Latitude indicates
the location of a place on Earth north or south of the Equator.
Latitude is an angular measurement in degrees (marked with °) ranging
from 0° at the Equator to 90° at the poles (90° N for the North Pole or
90° S for the South Pole).
Longitude is
an imaginary line that runs from the North Pole to the South Pole and
is used to describe the location of a place on Earth east or west of the
zero or prime meridian. In 1884, the International Meridian Conference
adopted the Greenwich Meridian as the universal prime meridian or zero
point of longitude. Longitude is measured in degrees ranging from 0° at
the Prime Meridian to +180° eastward and -180° westward. Each degree of
longitude is further sub-divided into 60 minutes, each of which is
further sub-divided into 60 seconds.
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