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

Dilatation

Earth science; Mapping science

The increase in volume of a continuous material per unit volume of the material. For example, local dilatation of the crust has been found to be a precursor of some earthquakes.

Differential distortion

Earth science; Mapping science

Those dimensional changes in length and width of film, paper, etc. , which deform photographic or printed images.

Least significant digit

Earth science; Mapping science

That digit, in a number, which contributes least to the value of the number.

Diffusion transfer

Earth science; Mapping science

(1) A set of precisely spaced, parallel lines which cause incident electromagnetic radiation to be diffracted either upon reflection or upon transmission between the lines. (2) The ruled piece of ...

Dipole antenna

Earth science; Mapping science

An antenna consisting of two separate, open ended conductors in line and a short distance apart. The adjacent ends are connected to the terminals of a radio receiver or radio transmitter. Usually ...

Diversion ditch

Earth science; Mapping science

(1) A ditch constructed to divert water from its natural channel. (2) An open, artificial waterway approximately parallel to the top of a cut backslope for preventing surficial water from flowing ...

A line, continuous or broken, drawn so that the area between it and a given straight line is exactly 1, while the area between any segment of the first line and the straight line is proportional to ...