**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 (which Le Sage called ultra-mundane corpuscles) 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, although it continued to be studied occasionally by physicists until the beginning of the 20th century, by which time it was generally considered to be conclusively discredited.

Read more about Le Sage's Theory Of Gravitation: Basic Theory, Fatio, Cramer and Redeker, Le Sage, Kinetic Theory, Wave Models, Later Assessments, Non-gravitational Applications and Analogies, Recent Activity

### Famous quotes containing the words gravitation, theory and/or sage:

“Knowledge, like matter, [my father] would affirm, was divisible in infinitum;Mthat the grains and scruples were as much a part of it, as the *gravitation* of the whole world.—In a word, he would say, error was error,—no matter where it fell,—whether in a fraction,—or a pound,—’twas alike fatal to truth.”

—Laurence Sterne (1713–1768)

“By the “mud-sill” *theory* it is assumed that labor and education are incompatible; and any practical combination of them impossible. According to that *theory*, a blind horse upon a tread-mill, is a perfect illustration of what a laborer should be—all the better for being blind, that he could not tread out of place, or kick understandingly.... Free labor insists on universal education.”

—Abraham Lincoln (1809–1865)

“I wish you all manner of prosperity, with a little more taste.”

—Alain-RenĂ© Le *Sage* (1668–1747)