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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 
sectional chart
Earth science; Mapping science
One of a series of aeronautical charts covering the United States of America at a scale of 1:500,000 and suitable for contact or visual navigation.
longitudinal comparator
Earth science; Mapping science
An instrument which allows two standards of length to be compared by translating the standards parallel to each other. The standards are placed parallel to each other on an ...
isogonic chart
Earth science; Mapping science
A chart on which lines (isogons) of constant angle from geodetic north to magnetic north are drawn.
bronze pendulum
Earth science; Mapping science
A quarter meter pendulum, used by the U. S. Coast and Geodetic Survey, made of aluminum-bronze consisting of one part of aluminum and nine parts of copper. Beginning in 1920, ...
long chord
Earth science; Mapping science
(1) On a simple curve, the chord, or the length of the chord, that extends from the point where a straight line ends and the curve begins (point of curvature) to the point where ...
callippic cycle
Earth science; Mapping science
A period of four Metonic cycles, equal to 76 Julian years or 27 759 days. It was introduced by Callippus, a Greek astronomer, about 350 B. C. as suggested improvement to the ...
collinearity condition
Earth science; Mapping science
The condition that a point in object space, the corresponding point in image space, and the corresponding perspective center must be collinear (i.e., all lie on the same straight ...
Sub-categories
- Geology (10953)
- Mapping science (105290)
- Oceanography (12332)
- Physical oceanography (42660)
- Remote sensing (8661)
- Seismology (14406)
- Soil science (29216)