Theoretical geodesy

Theoretical geodesy is the scientific study of the Earth's shape and size, focusing on understanding its precise geometry and gravity field. It uses mathematical models and physics to describe the Earth's surface, considering factors like its equatorial bulge and irregularities. This helps in creating accurate maps, navigation systems, and understanding Earth's physical processes. Essentially, it provides a detailed, science-based framework to understand the Earth's form and how it varies across the globe, enabling precise positioning and geographic measurements essential for various practical applications.