What is the true shape of the Earth? The model that best describes it is the Geoid
The Earth is not perfectly round as is often believed: depending on the level of approximation, it can be considered a sphere, a rotation ellipsoid, but its most precise shape is that of the Geoid. But how is it made and why is it so irregular? In this video we analyze the unique shape of the Earth, which does not correspond to any geometric solid, and we will understand why calculating the real shape of our planet is so complex.
00:00 What is the true shape of the Earth?
01:06 The theory of the spherical Earth: what science says
01:58 The rotation ellipsoid: Newton's discovery
02:56 The force of gravity varies: here's why it is not the same everywhere
03:42 What is the Geoid? The most precise model of the Earth
05:26 Gravitational forces in the Geoid: practical examples
06:01 Geoid vs Ellipsoid: differences and functionality
#geopop #earth #geoid