%ما هو (من)٪ 1 - تعريف
70th meridian east
LINE OF LONGITUDE EAST OF THE GREENWICH MERIDIAN
Longitude 70 degrees E
The meridian 70° east of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Asia, the Indian Ocean, the Southern Ocean, and Antarctica to the South Pole.
Magnetic Meridian
![The astronomic prime meridian at Greenwich, England. The geodetic prime meridian is actually 102.478 meters east of this point since the adoption of [[WGS84]].](https://commons.wikimedia.org/wiki/Special:FilePath/Prime meridian.jpg?width=200 "The astronomic prime meridian at Greenwich, England. The geodetic prime meridian is actually 102.478 meters east of this point since the adoption of [[WGS84]].")
LINE BETWEEN THE EARTH'S POLES WITH THE SAME LONGITUDE
Lines of longitude; Line of longitude; Magnetic meridian; Meridian in geography; Geographic meridian; Geographical meridian; Circle of longitude; Standard meridian
A line formed on the earth's surface by the intersection therewith of a
plane passing through the magnetic axis. It is a line determined by the
direction of the compass needle. The meridians constantly change in
direction and correspond in a general way to the geographical meridians.
Greenwich meridian
![Shetland Islands]], the most northerly parts of Scotland and the United Kingdom. Shetland lies 1° W of the prime meridian.](https://commons.wikimedia.org/wiki/Special:FilePath/Britannica Figure of the Earth.jpg?width=200 "Shetland Islands]], the most northerly parts of Scotland and the United Kingdom. Shetland lies 1° W of the prime meridian.")
![Royal Observatory]], marking the original Greenwich Prime meridian.](https://commons.wikimedia.org/wiki/Special:FilePath/Greenwich observatory laser.jpg?width=200 "Royal Observatory]], marking the original Greenwich Prime meridian.")
![A [[GPS]] receiver at the marking strip of the Greenwich meridian. The indicated longitude is not exactly zero because the ''geodetic'' zero meridian on a geocentric reference ellipsoid (which is what GPS positioning yields, using the [[IERS Reference Meridian]]) is 102 metres east of this strip.<ref name="RMG what"/>](https://commons.wikimedia.org/wiki/Special:FilePath/Greenwichmer1.jpg?width=200 "A [[GPS]] receiver at the marking strip of the Greenwich meridian. The indicated longitude is not exactly zero because the ''geodetic'' zero meridian on a geocentric reference ellipsoid (which is what GPS positioning yields, using the [[IERS Reference Meridian]]) is 102 metres east of this strip.<ref name=\"RMG what\"/>")
THE MERIDIAN OF THE BRITISH ROYAL OBSERVATORY IN GREENWICH, ENGLAND, WHEN DISTINGUISHED FROM THE GENERAL CONCEPT OF A PRIME MERIDIAN
Greenwich Meridian Line; Greenwich Meridian; Greenwich meridian; Prime Meridian (Greenwich); Greenwich Prime Meridian; Nullmeridian; Airy meridian
¦ noun the meridian of zero longitude, passing through Greenwich.
