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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
Air drag
Earth science; Mapping science
Resistance of the air to motion of a body moving in it. The term is applied, in particular, to (a) the resistance of the air to aircraft, projectiles, and artificial satellites, and (b) the ...
Acceleration error
Earth science; Mapping science
The error resulting from a change in a craft's velocity: e.g., the apparent deflection of the vertical, as indicated by a gyroscope (artificial horizon), when the craft accelerates.
Back fill
Earth science; Mapping science
Waste rock or other material filling a mined out stope to prevent caving in.
Normal axis
Earth science; Mapping science
An axis perpendicular to the longitudinal axis and generally in the plane of symmetry of the craft. It is oriented downwards or as defined by the constructor of the craft.
Critical angle
Earth science; Mapping science
The smallest angle at which a wave passing from a substance of higher refractive index to one of lower refractive index can be incident on the surface between the substances and be totally reflected ...
Vertical axis
Earth science; Mapping science
The line about which the telescope or alidade of an instrument rotates when moved horizontally. For an instrument in perfect adjustment and properly leveled, this axis is vertical, passes through ...
Autoregression
Earth science; Mapping science
A relationship connecting the members of a time series in such a manner that the value at one instant is expressible in terms of the values at previous instances, plus a random value.