Le Sage's theory of gravitation
Le Sage's theory of gravitation is a kinetic theory of gravity originally proposed by Nicolas Fatio de Duillier in 1690 and later by Georges-Louis Le Sage in 1748. The theory proposed a mechanical explanation for Newton's gravitational force in terms of streams of tiny unseen particles impacting all material objects from all directions. According to this model, any two material bodies partially shield each other from the impinging corpuscles, resulting in a net imbalance in the pressure exerted by the impact of corpuscles on the bodies, tending to drive the bodies together. This mechanical explanation for gravity never gained widespread acceptance.
Nicolas Fatio
P6: Fatio's pyramid
P7: Crystal lattice (icosahedron)
P8: Signatures of Newton, Huygens and Halley on Fatio's manuscript
In physics, gravity (from Latin gravitas 'weight') is a fundamental interaction which causes mutual attraction between all things that have mass. Gravity is, by far, the weakest of the four fundamental interactions, approximately 1038 times weaker than the strong interaction, 1036 times weaker than the electromagnetic force and 1029 times weaker than the weak interaction. As a result, it has no significant influence at the level of subatomic particles. However, gravity is the most significant interaction between objects at the macroscopic scale, and it determines the motion of planets, stars, galaxies, and even light.
The shape of two massive galaxies in the picture are distorted due to gravity.
The Leaning Tower of Pisa, where according to legend Galileo performed an experiment about the speed of falling objects
English physicist and mathematician, Sir Isaac Newton (1642–1727)
An illustration of the Schwarzschild metric, which describes spacetime around a spherical, uncharged, and nonrotating object with mass