- 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, ...
Comparison of the length of a surveyor's tape with the length of a standard tape (calibrated tape) to determine the true length of the former.
Industry:Earth science
To give a gloss to a photographic print by squeezing the print face down, on a polished plate, while wet and allowing to dry.
Industry:Earth science
Photographic film designed specially for use in aerial cameras. It is usually supplied in rolls in many lengths and widths, with various kinds of emulsions.
Industry:Earth science
A method of obtaining an approximate solution to a problem for which the governing equations and boundary conditions are known, by dividing the region of interest into numerous, interconnected subregions (finite elements) over which simple, approximating functions are used to represent the unknown quantities. The basic idea originated in the early 1900's as a method of solving for strains in bridges and buildings. It was further developed for analyzing the structure of aircraft in the early 1950's. The method, supported by rigorous mathematical theory, has now been applied to problems in heat flow, hydraulics, geodynamics and other disciplines.
Industry:Earth science
(1) The force acting on a body, divided by the mass of the body. (2) The difference between the inertial acceleration and the gravitational acceleration of a body. This definition is completely inconsistent with the usual definitions of force and acceleration and should not be used.
Industry:Earth science
That part of optics which concerns itself with the propagation of light along fibers of glass, quartz or other transparent substances. One geodetic application of fiber optics is to the construction of ring gyroscopes capable of measuring the Earth's rate of rotation.
Industry:Earth science
The point to which an observation is made in surveying i.e., the point to which a foresight is directed.
Industry:Earth science
A method of determining barometric altitude identical to the two base method, except that the roving barometers are carried by air and read in the aircraft as it passes on a level with the topographic feature whose altitude is wanted. The method is used to determine approximate elevations in regions where the terrain is extremely rugged.
Industry:Earth science
A bench mark, point, position, station, etc., for which geodetic coordinates (longitude and latitude) or elevations have been determined by a previous adjustment or by a more precise survey, and are to be held without change in a newer survey or adjustment.
Industry:Earth science
