Mapping science

Mapping science

The systemic study of the processes and designs involved with map making.

Industry: Earth science

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Mapping science

Appleton layer

Earth science; Mapping science

(1) The F layer in the ionosphere. It occurs in the general region between 150 and 300km above the ground. (2) The F 2 -layer in the ionosphere. It occurs at about 300km above the ground.

Alinement

Earth science; Mapping science

(1) Placing points along a straight line or in a common vertical plane. (2) Locating points with respect to a straight line or to a set of straight lines. The term should be used, in surveying, ...

Cartographic annotation

Earth science; Mapping science

The placing of additional data, drawing of new features, or deletion of destroyed or unimportant features on a photographic mosaic to show only current details. It may include elevations of ...

An instrument for measuring the Sun's angular elevation by determining the location, on a graduated staff, of the shadow of a horizontal vane. It was invented by John Davis in the 16th century and ...

Arc correction

Earth science; Mapping science

The quantity added to the period of a pendulum to account for the pendulum's departure from simple harmonic motion. The correction can be kept small by limiting the amplitude of oscillation.

Astrophysics

Earth science; Mapping science

The part of astronomy which is concerned with the physical structure of celestial bodies their temperatures, radiation, composition, and so on. The part of astronomy which is concerned with the ...