- 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, ...
That plane, at a given point, which is perpendicular to the astronomic or geodetic meridian through that point and which contains there the normal to the ellipsoid of reference.
Industry:Earth science
(1) The dividing of lands held by joint tenants or tenants in common, into distinct portions, so that the tenants may hold them in severalty. (2) In a technical sense, any division of real or personal property between co-owners or co-proprietors. Partition does not create or convey a new or additional title or interest but merely severs the unity of possession.
Industry:Earth science
A line, on an ellipsoid, every point of which is at the same geodetic latitude. It is often referred to as a parallel of latitude, although that term is better reserved for the geographic latitude. It may also be referred to simply as a parallel. A geodetic parallel on a heteraxial ellipsoid is a circle only at the equator (latitude zero). At other latitudes, the parallel is not a planar curve.
Industry:Earth science
Pertaining to or designating any reproduction process using a combination of photographic and mechanical procedures.
Industry:Earth science
Electronically-controlled aerial photography carried out on four flight-lines flown in a cloverleaf pattern from the four cardinal directions and with the flight lines intersecting over an identifiable mark or secondary-control point.
Industry:Earth science
An optical element introduced into an optical system to correct for small distortions in the objective lens system of a camera, stereoscopic plotter or rectifier.
Industry:Earth science
(1) The condition an anastigmatic lens-system must satisfy in order to produce a planar image. It is expressed by the equation Σ (1/(f <sub>i</sub> n <sub>i</sub>)) = 0, in which f <sub>i</sub> is the focal length and n <sub>i</sub> the refractive index of the i-th lens. (2) The condition that the Petzval curvature will vanish if an optical system is to be free of curvature of field.
Industry:Earth science
A measurement subject to the condition that a function of it and other quantities have some specified value. More precisely, a measurable quantity whose values are subject to the condition that some function of the quantity and other quantities have some specified value when the measured value is inserted. For example, the measured value of one angle in a plane triangle is a conditioned observation if the sum of the three angles in the triangle must be 180<sup>o</sup>.
Industry:Earth science
