Lines of Longitude (West): Difference between revisions

Revision as of 02:21, 30 January 2015

Earth Coordinates Map

Longitude is a geographic coordinate that specifies the east-west position of a point on the Earth's surface. It is an angular measurement, usually expressed in degrees and denoted by the Greek letter lambda (λ). Points with the same longitude lie in lines running from the North Pole to the South Pole. By convention, one of these, the Prime Meridian, which passes through the Royal Observatory, Greenwich, England, was intended to establish the position of zero degrees longitude. The longitude of other places was to be measured as the angle east or west from the Prime Meridian, ranging from 0° at the Prime Meridian to +180° eastward and −180° westward. Specifically, it is the angle between a plane containing the Prime Meridian and a plane containing the North Pole, South Pole and the location in question. (This forms a right-handed coordinate system with the z axis (right hand thumb) pointing from the Earth's center toward the North Pole and the x axis (right hand index finger) extending from Earth's center through the equator at the Prime Meridian.)A location's north-south position along a meridian is given by its latitude, which is (not quite exactly) the angle between the local vertical and the plane of the Equator.

Longitude, Wikipedia

@@ Line 3: / Line 3: @@
 [http://en.wikipedia.org/wiki/Longitude Longitude, Wikipedia]
-==East Lines==
+==West Lines==
-# [http://en.wikipedia.org/wiki/1st_meridian_east 1st meridian east]
+# [http://en.wikipedia.org/wiki/1st_meridian_west 1st meridian west]
-# [http://en.wikipedia.org/wiki/2nd_meridian_east 2nd meridian east]
+# [http://en.wikipedia.org/wiki/2nd_meridian_west 2nd meridian west]
-# [http://en.wikipedia.org/wiki/3rd_meridian_east 3rd meridian east]
+# [http://en.wikipedia.org/wiki/3rd_meridian_west 3rd meridian west]
-# [http://en.wikipedia.org/wiki/4th_meridian_east 4th meridian east]
+# [http://en.wikipedia.org/wiki/4th_meridian_west 4th meridian west]
-# [http://en.wikipedia.org/wiki/5th_meridian_east 5th meridian east]
+# [http://en.wikipedia.org/wiki/5th_meridian_west 5th meridian west]
-# [http://en.wikipedia.org/wiki/6th_meridian_east 6th meridian east]
+# [http://en.wikipedia.org/wiki/6th_meridian_west 6th meridian west]
-# [http://en.wikipedia.org/wiki/7th_meridian_east 7th meridian east]
+# [http://en.wikipedia.org/wiki/7th_meridian_west 7th meridian west]
-# [http://en.wikipedia.org/wiki/8th_meridian_east 8th meridian east]
+# [http://en.wikipedia.org/wiki/8th_meridian_west 8th meridian west]
-# [http://en.wikipedia.org/wiki/9th_meridian_east 9th meridian east]
+# [http://en.wikipedia.org/wiki/9th_meridian_west 9th meridian west]
-# [http://en.wikipedia.org/wiki/10th_meridian_east 10th meridian east]
+# [http://en.wikipedia.org/wiki/10th_meridian_west 10th meridian west]
-# [http://en.wikipedia.org/wiki/11th_meridian_east 11th meridian east]
+# [http://en.wikipedia.org/wiki/11th_meridian_west 11th meridian west]
-# [http://en.wikipedia.org/wiki/12th_meridian_east 12th meridian east]
+# [http://en.wikipedia.org/wiki/12th_meridian_west 12th meridian west]
-# [http://en.wikipedia.org/wiki/13th_meridian_east 13th meridian east]
+# [http://en.wikipedia.org/wiki/13th_meridian_west 13th meridian west]
-# [http://en.wikipedia.org/wiki/14th_meridian_east 14th meridian east]
+# [http://en.wikipedia.org/wiki/14th_meridian_west 14th meridian west]
-# [http://en.wikipedia.org/wiki/15th_meridian_east 15th meridian east]
+# [http://en.wikipedia.org/wiki/15th_meridian_west 15th meridian west]
-# [http://en.wikipedia.org/wiki/16th_meridian_east 16th meridian east]
+# [http://en.wikipedia.org/wiki/16th_meridian_west 16th meridian west]
-# [http://en.wikipedia.org/wiki/17th_meridian_east 17th meridian east]
+# [http://en.wikipedia.org/wiki/17th_meridian_west 17th meridian west]
-# [http://en.wikipedia.org/wiki/18th_meridian_east 18th meridian east]
+# [http://en.wikipedia.org/wiki/18th_meridian_west 18th meridian west]
-# [http://en.wikipedia.org/wiki/19th_meridian_east 19th meridian east]
+# [http://en.wikipedia.org/wiki/19th_meridian_west 19th meridian west]
-# [http://en.wikipedia.org/wiki/20th_meridian_east 20th meridian east]
+# [http://en.wikipedia.org/wiki/20th_meridian_west 20th meridian west]
-# [http://en.wikipedia.org/wiki/21st_meridian_east 21st meridian east]
+# [http://en.wikipedia.org/wiki/21st_meridian_west 21st meridian west]
-# [http://en.wikipedia.org/wiki/22nd_meridian_east 22nd meridian east]
+# [http://en.wikipedia.org/wiki/22nd_meridian_west 22nd meridian west]
-# [http://en.wikipedia.org/wiki/23rd_meridian_east 23rd meridian east]
+# [http://en.wikipedia.org/wiki/23rd_meridian_west 23rd meridian west]
-# [http://en.wikipedia.org/wiki/24th_meridian_east 24th meridian east]
+# [http://en.wikipedia.org/wiki/24th_meridian_west 24th meridian west]
-# [http://en.wikipedia.org/wiki/25th_meridian_east 25th meridian east]
+# [http://en.wikipedia.org/wiki/25th_meridian_west 25th meridian west]
-# [http://en.wikipedia.org/wiki/26th_meridian_east 26th meridian east]
+# [http://en.wikipedia.org/wiki/26th_meridian_west 26th meridian west]
-# [http://en.wikipedia.org/wiki/27th_meridian_east 27th meridian east]
+# [http://en.wikipedia.org/wiki/27th_meridian_west 27th meridian west]
-# [http://en.wikipedia.org/wiki/28th_meridian_east 28th meridian east]
+# [http://en.wikipedia.org/wiki/28th_meridian_west 28th meridian west]
-# [http://en.wikipedia.org/wiki/29th_meridian_east 29th meridian east]
+# [http://en.wikipedia.org/wiki/29th_meridian_west 29th meridian west]
-# [http://en.wikipedia.org/wiki/30th_meridian_east 30th meridian east]
+# [http://en.wikipedia.org/wiki/30th_meridian_west 30th meridian west]
-# [http://en.wikipedia.org/wiki/31st_meridian_east 31st meridian east]
+# [http://en.wikipedia.org/wiki/31st_meridian_west 31st meridian west]
-# [http://en.wikipedia.org/wiki/32nd_meridian_east 32nd meridian east]
+# [http://en.wikipedia.org/wiki/32nd_meridian_west 32nd meridian west]
-# [http://en.wikipedia.org/wiki/33rd_meridian_east 33rd meridian east]
+# [http://en.wikipedia.org/wiki/33rd_meridian_west 33rd meridian west]
-# [http://en.wikipedia.org/wiki/34th_meridian_east 34th meridian east]
+# [http://en.wikipedia.org/wiki/34th_meridian_west 34th meridian west]
-# [http://en.wikipedia.org/wiki/35th_meridian_east 35th meridian east]
+# [http://en.wikipedia.org/wiki/35th_meridian_west 35th meridian west]
-# [http://en.wikipedia.org/wiki/36th_meridian_east 36th meridian east]
+# [http://en.wikipedia.org/wiki/36th_meridian_west 36th meridian west]
-# [http://en.wikipedia.org/wiki/37th_meridian_east 37th meridian east]
+# [http://en.wikipedia.org/wiki/37th_meridian_west 37th meridian west]
-# [http://en.wikipedia.org/wiki/38th_meridian_east 38th meridian east]
+# [http://en.wikipedia.org/wiki/38th_meridian_west 38th meridian west]
-# [http://en.wikipedia.org/wiki/39th_meridian_east 39th meridian east]
+# [http://en.wikipedia.org/wiki/39th_meridian_west 39th meridian west]
-# [http://en.wikipedia.org/wiki/40th_meridian_east 40th meridian east]
+# [http://en.wikipedia.org/wiki/40th_meridian_west 40th meridian west]
-# [http://en.wikipedia.org/wiki/41st_meridian_east 41st meridian east]
+# [http://en.wikipedia.org/wiki/41st_meridian_west 41st meridian west]
-# [http://en.wikipedia.org/wiki/42nd_meridian_east 42nd meridian east]
+# [http://en.wikipedia.org/wiki/42nd_meridian_west 42nd meridian west]
-# [http://en.wikipedia.org/wiki/43rd_meridian_east 43rd meridian east]
+# [http://en.wikipedia.org/wiki/43rd_meridian_west 43rd meridian west]
-# [http://en.wikipedia.org/wiki/44th_meridian_east 44th meridian east]
+# [http://en.wikipedia.org/wiki/44th_meridian_west 44th meridian west]
-# [http://en.wikipedia.org/wiki/45th_meridian_east 45th meridian east]
+# [http://en.wikipedia.org/wiki/45th_meridian_west 45th meridian west]
-# [http://en.wikipedia.org/wiki/46th_meridian_east 46th meridian east]
+# [http://en.wikipedia.org/wiki/46th_meridian_west 46th meridian west]
-# [http://en.wikipedia.org/wiki/47th_meridian_east 47th meridian east]
+# [http://en.wikipedia.org/wiki/47th_meridian_west 47th meridian west]
-# [http://en.wikipedia.org/wiki/48th_meridian_east 48th meridian east]
+# [http://en.wikipedia.org/wiki/48th_meridian_west 48th meridian west]
-# [http://en.wikipedia.org/wiki/49th_meridian_east 49th meridian east]
+# [http://en.wikipedia.org/wiki/49th_meridian_west 49th meridian west]
-# [http://en.wikipedia.org/wiki/50th_meridian_east 50th meridian east]
+# [http://en.wikipedia.org/wiki/50th_meridian_west 50th meridian west]
 # [http://en.wikipedia.org/wiki/51st_meridian_east 51st meridian east]
 # [http://en.wikipedia.org/wiki/52nd_meridian_east 52nd meridian east]
@@ Line 184: / Line 184: @@
 # [http://en.wikipedia.org/wiki/179th_meridian_east 179th meridian east]
 # [http://en.wikipedia.org/wiki/180th_meridian_east 180th meridian east]
 ==See Also==