- Industry: 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, ...
A coordinate system similar to a geodetic coordinate system but with origin at the center of mass of the Moon and fixed in the Moon.
Industry:Earth science
The property of having a corner but not a boundary line in common.
Industry:Earth science
A gradual change in the period of a pendulum. The term is nearly synonymous with drift.
Industry:Earth science
A number placed on a contour line denoting the elevation of the contour relative to a given datum - usually the geoid.
Industry:Earth science
The curve connecting all points, on a sphere, at which the great-circle bearing of a given point is the same.
Industry:Earth science
A device consisting essentially of a short, rigid bar so made and so mounted that it forms a direct connection between the apparatus being tested and a permanent monument on the ground. Its length and inclination provide the means for determining the relative locations of the fiducial marks on the base tape or bar and on the monument. It is used to refer the mark at the end of a surveyor's tape or bar standard to a mark on the ground.
Industry:Earth science
Any device or structure placed near a tide or stream gage to reduce the effect of waves and other random motions on the reading of the gage.
Industry:Earth science
(1) A curve of constant radius. An arc of a circle. (2) A plane curve having the equation (x ²+ y ²)f(x) + g(x,y) = 0, where g(x,y) does not contain (x ²+ y ²) as a factor.
Industry:Earth science
A curved segment containing a point at which the normal to the curve changes direction by 180<sup>o</sup>. If the tangent is a vector, the tangent also changes direction by 180<sup>o</sup>. The point is called the point of cusp.
Industry:Earth science
