Longitude: Meridians

Every meridian is a memory of a human argument solved by a human invention. From the rocks of Scilly to the chip in your pocket, these imaginary lines are the most real thing we have ever drawn.

Pilots and captains rely on longitudinal coordinates to follow "Great Circle" routes, the shortest distances between two points on a sphere. meridians longitude

The most compelling aspect of meridians is historical. For centuries, while sailors could easily calculate their latitude (how far north or south they were), they were essentially blind regarding their longitude (how far east or west they were). Every meridian is a memory of a human