19 Terms
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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
Rhumb line bearing
Earth science; Mapping science
The initial bearing of one point from another, taken as the bearing of the rhumb-line between the two points with respect to a reference line.
Baldio
Earth science; Mapping science
(1) Waste lands. (Spanish) (2) Unappropriated public domain, not set apart for municipalities. (Texas)
Aperture diaphragm
Earth science; Mapping science
That aperture, in a telescope, which determines which parts of the light entering through the objective lens will pass through the rest of the optical system.
Augmetation correction
Earth science; Mapping science
A correction for the effect of augmentation on a measurement, and particularly that correction made to an angular elevation measured with a sextant.
Right ascension
Earth science; Mapping science
The angle between the plane of the hour circle passing through a celestial body and the plane of the hour circle passing through the vernal equinox. It is measured eastward from the vernal equinox ...
Autocollimator
Earth science; Mapping science
A telescope containing illuminated crosshairs placed so that they are imaged, by the objective lens system, at infinity (i.e., light from it is collimated by the objective lens system). When the ...
Augmentation
Earth science; Mapping science
(1) The number of times the apparent topocentric, angular diameter of a celestial body is greater than the geocentric, angular diameter of that body. (2) The apparent increase in diameter of a ...
