- 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, ...
The angle, measured in degrees, between the heading of an aircraft or ship and the track made good. Drift angle is designated as being right or left to indicate the direction of measurement.
Industry:Earth science
A combination of the TRANSIT satellites and a receiver capable of using the signals from the satellites to determine the location of the receiver.
Industry:Earth science
The algebraic sum of the movement of the rotational axis of a gyroscope because of precession caused by the Earth's rotation and precession caused by other forces.
Industry:Earth science
The curve obtained by the intersection of a plane with a surface as the plane approaches tangency with the surface. The indicatrix of Dupin characterized the curvature of the surface at the point of tangency.
Industry:Earth science
(1) A solar eclipse in which the Sun's disk is never completely covered but is seen as an annulus or ring at maximal eclipse. It occurs when the apparent disk of the Moon is smaller than that of the Sun. (2) An eclipse in which a thin ring of light appears around the obscuring body.
Industry:Earth science
A gradual change, in some property of an instrument, which affects the measurements made with that instrument.
Industry:Earth science
One of a set of drawings that contain similar or related features, such as drainage or culture, to be printed in different colors. There are as many drawings as there are colors to the shown on the printed copy.
Industry:Earth science
The quantity √ (a²- b²), in which a and b are half the lengths of the major and minor diameters, respectively, of a rotational ellipsoid. It is equal to ae, in which e is the eccentricity.
Industry:Earth science
A distribution map in which dots (usually of uniform size) are used, each dot representing a specific number or amount of the item whose distribution is being shown.
Industry:Earth science
