- Industrie: Earth science
- Number of terms: 93452
- Number of blossaries: 0
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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, ...
The share of a citizen of a New England town in the common land. The value of the acre right was a fixed quantity in each town but varied from town to town. A 10 acre lot or acre right in a certain town was equivalent to 113 acres of upland and 12 acres of meadow, and a certain exact proportion was maintained between the acre right and saleable lands.
Industry:Earth science
One half of the difference in elevation between consecutive high water and low water. Also referred to as tidal amplitude or tide amplitude.
Industry:Earth science
An objective measure of the ability of an optical system to show a sharp edge between two contiguous regions, one of high and the other of low illuminance in object space.
Industry:Earth science
(1) Lying near or close to. (2) Contiguous with; touching. Adjacent, as used in land surveying, has the first meaning and implies that the two objects or parcels of land are not widely separated, although they may not actually touch, while adjoining has the second meaning and implies that no third object or piece of land lies between them.
Industry:Earth science
In English law, a yard at the back part of or behind a house and belonging thereto. The term was formerly used in conveyances and also in pleading.
Industry:Earth science
An antenna in the form of an open ended, loosely coiled helix; the distance around one turn is approximately equal to the wavelength for which the antenna was designed. It has appreciable gain in the direction of its axis. Because of its high gain and small size (at the wavelength for which it was designed), it has been much used for receiving long wavelength signals such as those of the TRANSIT satellites.
Industry:Earth science
The length of the arc passed over by a pendulum in moving from a new position of greatest displacement to the other.
Industry:Earth science
(1) A coastal indentation that is part of the open sea. (2) A coastal indentation which encloses an area less than that inclosed by a semi circle whose diameter is a line drawn between the extremities of the indentation.
Industry:Earth science
The focusing of rays from a point source on the optical axis into points whose distance from the focal plane varies as the angle at which the rays entered the optical system, with rays entering at a small angle to the optical axis focusing closer to the focal plane than rays entering at a larger angle. The envelope of the converging rays is called the caustic of the optical system. The amount of spherical aberration varies with the location of the source and for any particular source is approximately proportional to the square of the distance of the outermost rays from the optical axis.
Industry:Earth science
