Foucault Pendulum: Here's the 171-Year Old Invention that Proves the Earth Rotates and Spins
The invention came from French scientist, Léon Foucault, who made this almost two centuries ago. The year is 1851, and doubts regarding the Earth spinning is also a massive one, as many people argue over this activity of the planet and how it relates to other entities in the galaxy.
Source: techtimes.com