- 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, ...
The spheroidal shape assumed by a rotating, homogeneous mass distorted by the tides raised by a second body toward which it is moving with constant velocity.
Industry:Earth science
An image transmitting or reflecting light without breaking the light up into component hues e.g., a black-and-white image.
Industry:Earth science
The variation in range of tide caused by the varying distance of the Earth from the Sun, as indicated by changes in the solar parallax.
Industry:Earth science
The science of inferring characteristics of an object by studying images of that object. The term includes image interpretation and ikonography, as well as the more specialized subjects of photogrammetry, photo-interpretation and radargrammetry.
Industry:Earth science
A line drawn on a chart or map and connecting all points that correspond to points on the Earth at which a particular event or value occurred simultaneously.
Industry:Earth science
An image which contains tones varying gradually from black to white. The source of this definition calls it a continuous tone but this is probably an error and is certainly not in accord with general usage.
Industry:Earth science
One of a class of (optical) projectors that throw images of photographic prints or other opaque material onto a map, map manuscript, or other surface for drawing. It is often used for transferring details from near-vertical photographs or similar material.
Industry:Earth science
An inequality having a period on one-half of a month.
Industry:Earth science
The integral number of days that have elapsed since Greenwich mean noon (1200 U.T.) on 1 January 4713 B.C. The day starting at this epoch is therefore Julian day number (J.D.) + 0; the day preceding it is J.D. - 0 (this is on the Julian proleptic calendar). Julian day number 2 415 020 corresponds to 12h on 0 January 1900. The Julian day number for 1950.0 is 2 433 282.423
Industry:Earth science
The constant devised by Kavraisky for determining the latitudes at which to place the standard parallels of a conic map projection, using criteria depending on the size and shape of the region being mapped.
Industry:Earth science
