- 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, ...
Lithography in which the inked image on the plate is first printed onto a rubber mat or blanket, from which the inked impression is then transferred (offset) onto the sheet of paper.
Industry:Earth science
The surface obtained by setting the Earth's gravitational potential equal to a constant when developing the formula for gravity potential as far as second-degree terms and with certain assumptions regarding the distribution of mass inside the Earth. The surface is of 24-th order and differs little from a rotational ellipsoid.
Industry:Earth science
That apparent, secular change in direction of distant stars which is caused by movement of the Solar System with respect to the rest of the Galaxy.
Industry:Earth science
The rough orientation of a stereoscopic model before doing the relative orientation.
Industry:Earth science
A pendulum, about 25 cm long, having a period of 1 second. It is often called a half-second pendulum.
Industry:Earth science
(1) A one-eighth part of a circle. (2) An instrument similar to a sextant but having an arc of only 45<sup>o</sup>.
Industry:Earth science
A pendulum so designed and supported that it can be used in only one position. The centers of suspension and of oscillation of an invariable pendulum are not interchangeable. Pendulums of this type (constructed by Kater, Peirce and Mendenhall, among others) can be used only for relative measurements of gravity acceleration.
Industry:Earth science
An oblique photograph taken in a direction transverse to the direction of flight.
Industry:Earth science
(1) Of, pertaining to, or producing shades of black and white corresponding to the natural shades or gradations of color. (2) (of a photographic emulsion) Sensitive to blue and green light but not to red light.
Industry:Earth science
