- 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, ...
Zoning whereby a specific density of residence or dwelling units is prescribed for an entire locale.
Industry:Earth science
That angle at which a ray incident upon a surface is completely polarized upon reflection. It is given by arct n (n <sub>s</sub> / n <sub>i</sub>), where n <sub>i</sub> is the index of refraction of the medium on the side at which the ray is incident and n <sub>s</sub> is the index of refraction of the medium on the other side.
Industry:Earth science
(1) Localized overexposure caused by radiant energy coming in at a level which exceeds the tolerance of the emulsion and thereby causing the image to lack definition. (2) A process for increasing the amount of light transmitted by a lens by coating the lens with anti reflective coating.
Industry:Earth science
The intervals of time between coincidence (in the same direction) of the position of a freely swinging pendulum and a clock pendulum are measured, usually at the point of lowest descent. The period of the freely swinging pendulum is then m P<sub>c</sub>/n, where m P<sub>c</sub> is the length of the interval (2mP<sub>c</sub> if coincidences in the opposite direction are measured also) and n is the number of swings of the freely swinging pendulum.
Industry:Earth science
A combination of light of different chromaticities. i.e., a single color produced by mixing lights of different colors.
Industry:Earth science
The process of applying the term 2Ng<sub>o</sub>/r (Bruns term) to a calculated value go of gravity on the geoid, to reduce gravity to the ellipsoid at a distance N below the geoid; r is a suitable radius of the Earth. It amounts to about 0. 031 cm/s².
Industry:Earth science
A development in which related housing-units are grouped or clustered with common, open space surrounding each group, such open space serving as a buffer between groups or used for common recreation, walks, pathways for bicycles or other such informal activity.
Industry:Earth science
A projecting beam or overhanging portion of a structure, supported at one end only.
Industry:Earth science
A camera so mounted that its optical axis can be kept pointed in the direction of an artificial satellite. The Baker Nunn camera, for example, is a satellite tracking camera.
Industry:Earth science
An optical device permitting two separate pictures to be viewed separately or together in any of a variety of fashions, for comparison. The principal applications are to the comparison or maps or aerial photographs.
Industry:Earth science
