- 行业: Earth science
- Number of terms: 93452
- Number of blossaries: 0
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Founded in 1941, the American Congress on Surveying and Mapping (ACSM) is an international association representing the interests of professionals in surveying, mapping and communicating spatial data relating to the Earth's surface. Today, ACSM's members include more than 7,000 surveyors, ...
A misstatement of a material fact, made with intent to deceive or made with a reckless disregard of the truth that actually does deceive.
Industry:Earth science
The movement of a tidal current toward the shore or up a tidal river or estuary.
Industry:Earth science
A field at every point of which the vectorial intensity of the electric force is defined.
Industry:Earth science
A frequency lying between 3 kHz and 30 kHz. The wavelength of electromagnetic radiation therefore lies between 10 km and 100 km.
Industry:Earth science
The power-density contours, at the ground, of the radiation from a transmitting antenna or the pattern of a receiving antenna carried on an aircraft or artificial satellite. The term has a number of other meanings as well, including, apparently, that of resolution. The term ground coverage is preferable.
Industry:Earth science
(1) An absolute fee (sense 2); a fee without limitations to any particular class or heirs or restrictions, but subject to the limitations of eminent domain, escheat, police power and taxation. (2) An inheritable estate.
Industry:Earth science
The photographic density of an unexposed but processed photographic emulsion.
Industry:Earth science
A frequency which forms a least upper bound or greatest lower bound of a given band of frequencies.
Industry:Earth science
A measure of the shape of a three dimensional object. A. Cailleux's formula is (a+b)/2c , in which a is the longest dimension of the object, c the shortest and b and a representative, intermediate dimension.
Industry:Earth science
The force exerted between two bodies because they have mass. If the bodies have masses m<sub>1</sub> and m<sub>2</sub>, respectively, and are of negligible size in comparison to the distance r between them, then the force f acting between the two bodies is f = - G m<sub>1</sub> m<sub>2</sub> r/r <sup>3</sup>. G is the gravitational constant.
Industry:Earth science