6 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
Aerodynamic correction
Earth science; Mapping science
The amount subtracted from the period of a pendulum to account for its lengthening because the total mass of the pendulum is increased by gas absorbed on the surface.
Marine datum
Earth science; Mapping science
A point, line or surface used as reference from which to reckon elevations or depths. It is called a tidal datum when defined by a certain phase of the tide.
Half-pendulum day
Earth science; Mapping science
The period T d , in sidereal hours, at a point at geodetic latitude φ, as given by the formula.
Plane-rectangular coordinate system
Earth science; Mapping science
A Cartesian coordinate system in the plane, the axes intersecting at right angles.
Traversing course
Earth science; Mapping science
In describing a traverse, the azimuth and length of a single line of traverse considered together.
Densification network
Earth science; Mapping science
(1) A survey network connected to and contained in a survey network of the same or less accuracy. (2) A survey network connected to and contained in a survey network of the same or less accuracy, ...
Cordoba durchmusterung
Earth science; Mapping science
A star catalogue giving the approximate coordinates of 613 954 stars between declinations 21 o and 90 o and brighter than 10. 0m. Usually referred to as the C. D. It complements the Bonne ...
