Noun

Resultant force on Earth's surface, of the attraction by the Earth's masses, and the centrifugal pseudo-force caused by the Earth's rotation.

* {{quote-magazine, date=2013-06-07, author=David Simpson

, volume=188, issue=26, page=36, magazine=(The Guardian Weekly) , title= Fantasy of navigation , passage=It is tempting to speculate about the incentives or compulsions that might explain why anyone would take to the skies in [the] basket [of a balloon]: perhaps out of a desire to escape the gravity of this world or to get a preview of the next; […].}}

Gravitation, universal force exercised by two bodies onto each other
(In casual discussion, gravity and gravitation are often used interchangeably).

* {{quote-magazine, date=2012-01, author=Michael Riordan, volume=100, issue=1, page=86

, magazine=(American Scientist) , title= Tackling Infinity , passage=Some of the most beautiful and thus appealing physical theories, including quantum electrodynamics and quantum gravity , have been dogged for decades by infinities that erupt when theorists try to prod their calculations into new domains. Getting rid of these nagging infinities has probably occupied far more effort than was spent in originating the theories.}}

The state or condition of having weight; weight; heaviness.

Specific gravity.

The state or condition of being grave (graveness).

Noun

(intensities)

the quality of being intense

the degree of strength

(physics) time-averaged energy flux (the ratio of average power to the area through which the power "flows"); irradiance

(optics) can mean any of radiant intensity, luminous intensity or irradiance

(astronomy) syn. radiance

(geology) The severity of an earthquake in terms of its effects on the earth's surface, and buildings. The value depends on the distance from the epicentre, and is not to be confused with the magnitude.