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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 
equation of ephemeris time
Earth science; Mapping science
The difference: hour angle of true Sun minus hour angle of fictitious mean sun.
engineer's scale
Earth science; Mapping science
A piece of wood or metal having a triangular cross section and marked, along each face adjacent to an edge, at regular intervals; the marks are numbered so as to indicate the ...
new edition
Earth science; Mapping science
An issue of a previously published map, chart, or atlas differing from previous issues in its factual content, layout, or design.
ephemeris longitude
Earth science; Mapping science
Longitude measured eastward from the ephemeris meridian.
human engineering
Earth science; Mapping science
That part of engineering which deals with the design of devices, machines, and structures in such a way as to make them best fitted to use by humans.
spheroidal elevation
Earth science; Mapping science
The value HsN calculated for the elevation of a point PN by dividing a theoretical value WN of the potential function at PN (assuming the value to be 0 on the geoid) by a ...
elongation
Earth science; Mapping science
(1) The angular distance of a celestial body from the Sun, as viewed from the Earth. An elongation of 0 o is called conjunction, one of 180 o is called opposition and one of ...
Sub-categories
- Geology (10953)
- Mapping science (105290)
- Oceanography (12332)
- Physical oceanography (42660)
- Remote sensing (8661)
- Seismology (14406)
- Soil science (29216)