- 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 art consisting of mapping (or cartography) and surveying. The term was suggested in the 1950's by Walter S. Dix in an attempt to find a single term covering both cartography and surveying.
Industry:Earth science
A geometry having the usual postulates for incidence of points, lines, and planes, with the additional postulate that: if a point p is not on line L, there exists one and only line M such that M contains p and is parallel to L
Industry:Earth science
A minute particle of silver resulting from the chemical reduction of silver salts when an exposed, light sensitive photographic emulsion is developed.
Industry:Earth science
The integral number of sidereal days (determined by the equinox of date) that have elapsed at Greenwich since the beginning of the sidereal day that was in progress on 1 January 4713 B.C. (Julian day number 0.0). It is the integral part of the Greenwich sidereal date.
Industry:Earth science
The value obtained by averaging gravity anomalies over a specific area such as a quadrangle 1<sup>o</sup> by 1<sup>o</sup> or 5' by 5' on a side.
Industry:Earth science
Time based on the Greenwich meridian as reference. In distinction from time based on a local meridian or on the meridian of a time zone.
Industry:Earth science
In hydrography, an unintentionally unsurveyed part of a region which was to have been completely surveyed. A holiday is particularly likely to occur at the junction between two surveys. It is similar to a gore or hiatus in land surveying.
Industry:Earth science
The net lateral increase, in distance or area per flight, for a specified amount of sidelap. Commonly abbreviated as GGS. It is used to compute the number of flight lines needed to completely photograph a given region.
Industry:Earth science
In Spanish law, a measure of land equal to as much as a yoke of oxen can plow in one day.
Industry:Earth science
A period containing 3600 sidereal seconds or 1/24th of a sidereal day.
Industry:Earth science
