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Mapping science
The systemic study of the processes and designs involved with map making.
Industry: Earth science
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Mapping science
Nominal chord
Earth science; Mapping science
The degree of curve for chords less than 100 feet long.
BIH system 1968
Earth science; Mapping science
A method of deriving the polar motion from a weighted set of observations from 34 instruments for latitude and 17 for time (longitude) at 29 observatories in existence in 1966. Corrections are ...
Canadian geodetic datum
Earth science; Mapping science
A vertical-control datum defined, by Order in Council 11 March 1935, as: mean sea level as determined at coastal points by the Canadian Hydrographic Survey and extended inland by the Canadian ...
Cassegrainian focus
Earth science; Mapping science
In a Cassegrainian telescope, that point behind the primary mirror at which light from the secondary mirror is brought to a focus. The term is sometimes applied to a focal point behind the primary ...
Cesspool
Earth science; Mapping science
An underground pit with porous walls, used to catch and temporarily contain sewage and other liquid refuse. The refuse decomposes, philtres out from the pit, and is absorbed into the soil.
Square cartesian coordinate system
Earth science; Mapping science
Rectangular Cartesian coordinate system in which the divisions along both axes have the same length.
Change of grade
Earth science; Mapping science
The difference between the elevation of a newly constructed highway and the elevation of the land, street or highway previously existing at the site.
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