Gravity - A natural force exerted on a body toward the earth's surface or between two bodies. Gravity has a strong effect on how matter interacts. Gravitational attraction depends on the masses of the bodies involved and the distance between them. Centrifugal force caused by the earth's rotation on its axis tends to lessen the force of gravity.
[A Journey into gravity and spacetime; John Archibald; 1990; Scientific American Library; New York.]
[Gravity, deformation, and the earth's crust: in theory, experiments, and geological application; Hans Ramberg; 1981; Academic Press; London.]
Atmospheric Chemistry Glossary