Universal Gravitation: An Ultimate Renewable Energy.

The universal gravitation is not just a kind of big force existed in the universe. It is a kind of energy. Furthermore, it is a kind of renewable energy. In this paper, we will introduce a method to transfer this intangible energy to tangible liquid's potential energy. The method used here comes from the new application of Pascal's principle (or Pascal's law) existed some four hundred years ago. This result has many implications: (1) it has shown that the universal gravitation is a kind of renewable energy source existed everywhere; (2) On the surface of the planet, we can artificially generate the renewable energy at any time and at any place; (3) this result has shed a light on solving the earth warming, energy shortage and clean water shortage problems. [ABSTRACT FROM AUTHOR]