“meridian”的概念、定义、翻译、参考文献-科学参考

meridian

Physics

1. See latitude and longitude.

2. (magnetic meridian) An imaginary great circle on the earth’s surface that passes through the north and south magnetic poles. A compass needle on the earth’s surface influenced only by the earth’s magnetic field (see geomagnetism) comes to rest along a magnetic meridian.

3. (celestial meridian) A great circle of the celestial sphere that passes through the zenith and the celestial poles. It meets the horizon at the north and south points.

Mathematics

A great circle on the Earth, assumed to be a sphere, through the north and south poles or such a semi-circle between poles. More generally, a meridian on a surface of revolution is a copy of the generating curve that has been rotated through some fixed angle. The meridians are then normal to the latitudes.

Geography

An imaginary circle along the world’s surface from geographic pole to geographic pole; a line of longitude. Meridians are described by the angle they form west or east of the prime meridian, which has a value of 0° and runs through Greenwich, England.

单词	meridian
释义	meridian Physics 1. See latitude and longitude. 2. (magnetic meridian) An imaginary great circle on the earth’s surface that passes through the north and south magnetic poles. A compass needle on the earth’s surface influenced only by the earth’s magnetic field (see geomagnetism) comes to rest along a magnetic meridian. 3. (celestial meridian) A great circle of the celestial sphere that passes through the zenith and the celestial poles. It meets the horizon at the north and south points. Mathematics A great circle on the Earth, assumed to be a sphere, through the north and south poles or such a semi-circle between poles. More generally, a meridian on a surface of revolution is a copy of the generating curve that has been rotated through some fixed angle. The meridians are then normal to the latitudes. Geography An imaginary circle along the world’s surface from geographic pole to geographic pole; a line of longitude. Meridians are described by the angle they form west or east of the prime meridian, which has a value of 0° and runs through Greenwich, England.
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