- 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, ...
Inertial navigation in which the outputs of accelerometers that have gyroscopically maintained orientations are converted to geodetic coordinates by automatic computers.
Industry:Earth science
An azimuthal map projection based on a perspective projection in which the center of perspective lies outside the closed surface (e.g., ellipsoid) being mapped.
Industry:Earth science
A clause, written into a conveyance of title, often of the form all abutting strips of land owned by the grantor, whether owned of record or by virtue of the Statue of Limitations. In most States, this allows the tacking on of adverse or possession rights. If only the written title is conveyed, an interruption of possession occurs and the time necessary for possession must start again.
Industry:Earth science
A matrix A such that for every real vector x the scalar quantity xt A x is a positive real number.
Industry:Earth science
(1) Motion of a body, in its orbit in a solar system, in a sense contrary to that in which a majority of the other bodies in the same solar system revolve.
Industry:Earth science
A phrase used in legal descriptions of property to indicate that the actual distance, direction, or area may not be exactly that given in the description. The phrase is used when it would be impractical to determine the exact value and when the exact value is not important. The words in their ordinary use are taken as words of caution, denoting some uncertainty in the mind of the person using them and a desire not to misrepresent. When used in connection with quantity and distance, more or less are words of safety and precaution, intended merely to cover some slight or unimportant inaccuracy. When 125 feet more or less to the point of beginning is used in a deed, the more or less indicates that the 125 feet is an informative term, whereas to the point of beginning is the controlling term. A phrase such as about 12 acres is indefinite and should be avoided because the word about is very broad in meaning.
Industry:Earth science
(1) The irregularly varying motion of the Earth's pole of rotation with respect to the Earth's crust.
Industry:Earth science
A gage for measuring the pressure of a gas. A common form is a U-shaped tube containing mercury and closed at one end only; the other end is open and exposed to the gas whose pressure is to be measured. Another form is a U-shaped tube open at both ends; one end is connected to a gas at a known pressure and the other is connected to the gas whose pressure is to be measured.
Industry:Earth science
A map made using photogrammetric methods applied to stereoscopic pairs of aerial or terrestrial photographs.
Industry:Earth science
