- 行业: Earth science
- Number of terms: 93452
- Number of blossaries: 0
- Company Profile:
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, ...
Measured along a curved line. The line could be circular, parabolic, hyperbolic, spiral, a catenary, etc.
Industry:Earth science
One of the units of length (or the speed of light in vacuo), mass, time, temperature, amount of substance, electrical current and luminous intensity.
Industry:Earth science
A correction applied to the measured length of a line to allow for the tape's not being held exactly in a vertical plane containing the line. Although the two vertical planes which contain the directions of the line at its two ends do not coincide, they practically do so for all surveying over short distances. Any method of aligning a base between its end points will serve in determining an alinement correction.
Industry:Earth science
A bar (2) on which representative units of length are marked off and used to calibrate other measures of length or distance.
Industry:Earth science
An astrolabe so constructed that the personal error of the observer does not affect the measurements. The Danjon astrolabe is such an instrument.
Industry:Earth science
Base-line reduction to the ellipsoid when the ellipsoid is a spheroid (ellipsoid of rotation).
Industry:Earth science
A hydrographic chart of the British Admiralty. Sometimes written, incorrectly, admiralty chart.
Industry:Earth science
A method of successive approximation in which successive values converge toward some final value but then, after a certain number of steps, begin to diverge.
Industry:Earth science
A criterion (introduced by Abbe in 1863) for testing the hypothesis that a systematic trend exists in a set of observations. The criterion is seldom used.
Industry:Earth science
That which belongs to another thing as principal and passing as incident to it. As, e.g., a right of way or other easement to land, a right of common to pasture, an outhouse, barn, garden, or orchard. In a strict legal sense, land cannot pass as an appurtenance to land.
Industry:Earth science
