“latitude”的概念、定义、翻译、参考文献-科学参考

latitude

Mathematics

Suppose that the meridian through a point P on the Earth’s surface meets the equator at P′. Let O be the centre of the Earth. The latitude of P is then the angle P′OP, measured in degrees north or south. Latitude and longitude uniquely fix the position of a point on the Earth’s surface. The term also describes the circle of points of a given latitude; and more generally, on a surface of revolution, a latitude is any circle produced by the rotation of a point of the generating curve of the surface.

Astronomy

The angle north or south of some reference plane. In astronomy, the equivalent of terrestrial latitude is termed declination. See also celestial latitude; galactic latitude; heliocentric latitude.

Geography

Parallels of latitude are imaginary circles drawn round the Earth parallel to the equator. The parallels are numbered according to the angle formed between a line from the line of latitude to the centre of the Earth and a line from the centre of the Earth to the equator. Those regions lying within the Arctic and Antarctic circles, having values of 66.5° to 90°, are termed high latitudes. Low latitudes lie between 23.5° north and south of the equator, i.e. within the tropics. Mid-latitudes, also known as temperate latitudes, lie between the two.

单词	latitude
释义	latitude Mathematics Suppose that the meridian through a point P on the Earth’s surface meets the equator at P′. Let O be the centre of the Earth. The latitude of P is then the angle P′OP, measured in degrees north or south. Latitude and longitude uniquely fix the position of a point on the Earth’s surface. The term also describes the circle of points of a given latitude; and more generally, on a surface of revolution, a latitude is any circle produced by the rotation of a point of the generating curve of the surface. Astronomy The angle north or south of some reference plane. In astronomy, the equivalent of terrestrial latitude is termed declination. See also celestial latitude; galactic latitude; heliocentric latitude. Geography Parallels of latitude are imaginary circles drawn round the Earth parallel to the equator. The parallels are numbered according to the angle formed between a line from the line of latitude to the centre of the Earth and a line from the centre of the Earth to the equator. Those regions lying within the Arctic and Antarctic circles, having values of 66.5° to 90°, are termed high latitudes. Low latitudes lie between 23.5° north and south of the equator, i.e. within the tropics. Mid-latitudes, also known as temperate latitudes, lie between the two.
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