Today, we don't need marine chronometers. The Global Positioning System (GPS) relies on a constellation of 31 satellites, each carrying atomic clocks. Your phone receives signals from at least four satellites and triangulates your position. But the underlying geometry is still .
This article dives deep into the concept of meridian longitude, exploring its definition, history, measurement techniques, and real-world applications. By the end, you’ll have a thorough understanding of why these imaginary lines are so crucial to modern life. meridian longitude