Why did Carl Friedrich Gauss begin studying differential geometry?
Carl Friedrich Gauss initiated the field of differential geometry primarily through his involvement in practical problems related to surveying and geodesy.
Between 1818 and 1832, Gauss was tasked with surveying the territory of Hanover. This project required extensive fieldwork and led him to develop new methods for analyzing the properties of surfaces. Specifically, he sought to understand how to measure the curvature of a surface in a way that remained intrinsic—meaning the measurement would not change if the surface were bent without being stretched. This work allowed him to characterize the geometric differences between various shapes, such as why a sphere cannot be represented on a flat map without distortion, whereas a cylinder can be flattened onto a plane because they share the same intrinsic curvature.12