Everyday
How Distance Is Calculated on Earth: The Haversine Spherical Formula
Just ask and get Editorial Team(Geodesy & Navigation)
Updated 2026-09-20
6 min read
Key Takeaway:Understand the mathematical trigonometry behind GPS navigation, spherical geometry, and flight path distances.
Why Planar Pythagorean Geometry Fails for Navigation
Because the Earth is approximately spherical, calculating distance using standard Euclidean flat geometry (a² + b² = c²) introduces massive errors over long distances. Spherical trigonometry is required.
Frequently Asked Questions
Why do transatlantic flight routes curve north?
Because the shortest distance on a sphere follows a great circle, which appears curved when projected onto a flat 2D map.