Meridian Longitude [2021] 🆓

Meridians and longitude form the geographic coordinate system used to specify positions on Earth east and west of a reference meridian. Longitude is an angular measurement (in degrees) from the prime meridian; meridians are the imaginary north–south lines connecting the poles at constant longitude.

Why Greenwich? In the 19th century, Britain was the dominant naval and industrial power. British cartographers had already produced the most accurate nautical charts, and most of the world's shipping used Greenwich as their reference. At the International Meridian Conference in Washington, D.C., 22 nations voted to make Greenwich the world's Prime Meridian. France abstained (preferring Paris) but eventually adopted the standard. meridian longitude

Unlike lines of latitude (which are parallel), all meridians converge at the poles. They are not parallel, making them unique in grid systems. The Prime Meridian: By international convention, the 0∘0 raised to the composed with power In the 19th century, Britain was the dominant