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Earth science
Any of several geological sciences that are concerned with the earth, its origins, and all of its various structures and physical forms and phenomena.
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Earth science > Mapping science 
astigmatizer
Earth science; Mapping science
A lens which introduces astigmatism into an optical system. An astigmatizer is usually mounted so that it can be moved into or out of the optical path at will. In a sextant, ...
azimuth by altitude
Earth science; Mapping science
An azimuth determined by solving the astronomical triangle with latitude, declination and angular elevation given.
aerometeorograph
Earth science; Mapping science
An instrument, carried on balloons or rockets, that measures and records pressure, temperature, and relative humidity of the air through which it is carried. Before the ...
assessment
Earth science; Mapping science
(1) A levy of tax against property. (2) The amount of tax levied against property.
asymptote
Earth science; Mapping science
(1) The limit approached by the tangent to a curve as the point of tangency approaches infinity. (2) The line approached by a curve as the distance along the curve becomes very ...
absorption spectrum
Earth science; Mapping science
The array of absorption lines and bands that results from the passage of radiant energy from a source of continuous electromagnetic radiation thru a substance that absorbs such ...
absolute altitude
Earth science; Mapping science
Altitude above the actual physical surface, either land or water, of a planet or natural satellite. It is not the same as distance above mean sea level, which is a distance ...
Sub-categories
- Geology (10953)
- Mapping science (105290)
- Oceanography (12332)
- Physical oceanography (42660)
- Remote sensing (8661)
- Seismology (14406)
- Soil science (29216)