- Industry: Earth science
- Number of terms: 93452
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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, ...
An interval of time based on the Moon's transit of the local celestial meridian.
Industry:Earth science
The organization established in 1900 by the International Astronomical Union and the International Association of Geodesy to be responsible for determining polar motion by measuring the astronomical latitudes of the three to five observatories it uses. Usually abbreviated to I.L.S. The observatories in operation at present, and their nominal astronomic coordinates, are<br>
Industry:Earth science
The quantity M(v) expressing the fidelity with which a periodic pattern (frequency v) can be reproduced in a photograph, and given by M(v) ≡ (E <sub>max</sub> - E <sub>min</sub>) / (E <sub>max</sub> + E <sub>min</sub>), in which E max (E <sub>min</sub>) is the largest (smallest) value of exposure converted (using the D logE curve of the emulsion) from the measured density of the photographic image.
Industry:Earth science
A rectangular array of numerical or algebraic quantities (elements) obeying the following algebraic rules. (a) The sum of two arrays having the same number of rows and the same number of columns is the array whose element in row m and column n is the sum of the elements in row m and column n of the summands. (b) The product of an array by a constant is the array whose element in row m and column n is the constant times the element in row m and column n of the original array. (c) The product of two arrays having the same number of rows is the array such that the element in row m and column n is the sum of the products of each element of column m of the one array by the corresponding element in column n of the second array. The word krakovian is also written as Krakovian, Cracovian and cracovian. The krakovian was invented by T. Banachiewics to lessen the chance of blunders of the kind made in hand calculations involving matrices. Blunders made when doing column-by-column multiplication are less frequent than similar blunders made when doing row by column multiplication. However the introduction of large, programmable calculators has eliminated the computational need for krakovians and such arrays are therefore principally of theoretical interest.
Industry:Earth science
An interest growing out of ownership, as distinguished from a governmental interest which would not necessarily imply ownership.
Industry:Earth science
A lunitidal interval pertaining to either the higher high water or the lower low water at the time of the tropic tides.
Industry:Earth science
(1) An image such that down-t-up motion in the scene causes up to down motion in the image. (2) An image appearing upright or in the same relative position as the object.
Industry:Earth science
(1) A person who interprets. (2) A person who does photographic interpretation. (3) A person who infers geological structure from geophysical data.
Industry:Earth science
(1) Of more recent date. (2) In particular, of a mortgage, lien or the like, inferior or subordinate as to right of preference.
Industry:Earth science
The mass of a platinum iridium body kept at the International Bureau of Weights and Measures near Paris and accepted internationally as a standard of mass. In the original metric system, the centimeter-gram-second system, the gram was the unit of mass and defined to be the mass of 1 cubic centimeter of water at its maximum density. This definition was later changed to make the gram equal to 1/1000 of the mass of the body called the kilogram. For practical reasons, the kilogram is designated as the unit of mass in the SI
Industry:Earth science
