- 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, ...
The angle at which two lines of position intersect. It is preferably a right angle.
Industry:Earth science
A chart showing prescribed or recommended places where craft may be anchored.
Industry:Earth science
The line from the center of an ellipse to the extremity of the shortest diameter. i.e., one of the two shortest lines from the center to the ellipse. The term is also used to mean the length of the line.
Industry:Earth science
The angular elevations of two or more celestial bodies measured at the same time.
Industry:Earth science
Land owned absolutely, without obligation to one with superior rights.
Industry:Earth science
A list giving, for specific satellites and for a particular location or locations, the Universal Times at which these satellites will rise or set, the satellites' greatest angles of elevation and azimuth at the observer.
Industry:Earth science
An angle between two directed lines in a horizontal plane. Equivalently, the dihedral angle between two planes intersecting in a vertical line. The angles measured on the horizontal circle of a theodolite are horizontal angles if the standing axis of the theodolite is vertical and if the horizontal circle is perpendicular to the standing axis.
Industry:Earth science
The tendency of a beam of charged particles moving at relativistic speeds to stay narrow and not spread. As the speed of the particles increases, the electrostatic field accompanying the particles diminishes and the tendency to spread therefore diminishes also.
Industry:Earth science
The angle at a point A, on the ellipsoid, between the meridional plane through A and the normal section which passes through A and B.
Industry:Earth science
