- Branche: 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 pair of formulas for the root-mean-square error or probable error of a single measurement and the root mean square error or probable error of the average. They are r.m.s. of single measurement = 1.25 Σ δ <sub>x</sub> / √ (n(n-1)) and r.m.s. average = 1.25 Σ δ <sub>x</sub> / (n √(n-1)); the factor 1.25 is replace by 0.8453 if the probable error is wanted. δ <sub>x</sub> is the absolute value of a deviation and n is the number of deviations.
Industry:Earth science
A circle, on the celestial sphere, containing all points of the same celestial longitude.
Industry:Earth science
That geomagnetic pole which lies in the northern hemisphere.
Industry:Earth science
Acel pol geomagnetic care se află în emisfera nordică.
Industry:Earth science
A map revision correcting the map for all known (mappable) changes that have occurred in the region since the last previous revision of the map. No changes are made in distances or elevations of unchanged points, and the cartographic specifications used for the previous edition are adhered to.
Industry:Earth science
A division of land in Louisiana corresponding to a county in other States. It is an outgrowth of the original districts set up by the church.
Industry:Earth science
The title deed by which a government, either state or federal, conveys its lands.
Industry:Earth science
The angular coordinates of a celestial body referred to a coordinate system having its origin at the center of the Sun.
Industry:Earth science
