Imagine you are a ship’s captain in 1707. You know how far north or south you are by the height of the sun. But east to west? You are guessing. Then, one foggy night, your fleet smashes into the rocks of the Scilly Isles. 2,000 men perish. The problem wasn't bad weather—it was a lack of lines .
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. meridians longitude
Those lines are . And they have a story far more dramatic than the equator’s simple belt. The Vertical Slices While latitude (the horizontal lines) is natural—defined by the Earth’s spin and the sun—longitude is an act of pure human ego. Every meridian is a half-circle running from the North Pole to the South Pole. There are 360 of them (one for every degree of a circle). Imagine you are a ship’s captain in 1707