gravitation

(physics) the force of attraction between all masses in the universe; especially the attraction of the earths mass for bodies near its surface; "the more remote the body the less the gravity"; "the gravitation between two bodies is proportional to th

फिर अरबों सालों में गुरुत्वाकर्षण अपना काम करने लगता है.

irrigation by gravitation rather than by pumps