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

Equal-altitude method of determining latitude

Earth science; Mapping science

Measurement of the azimuths of three or more stars at the instants these stars pass through a circle of specified, constant angular elevation θ, and calculation of a correction Δσ to the assumed ...

Engineer's chain

Earth science; Mapping science

A chain 100 feet long and composed of 100 links each 1 foot long. At the end of every 10th link, a brass tag is fastened notched to show the number of preceding 10 link segments.

(1) That condition, of a system, in which no change occurs in the system's state as long as the system's surroundings are not altered. The definition is imprecise insofar as the concept of state is ...

Equilibrium spheroid

Earth science; Mapping science

The shape that the Earth would assume if it were entirely covered by a tideless ocean of constant depth. This definition is incomplete. It does not specify that the ocean be also without winds or ...

Encumbrance

Earth science; Mapping science

An interest or right in real property which diminishes the value of the fee but does not prevent conveyance of the fee by its owner. Mortgages, taxes due and judgments are encumbrances known as ...

Geometrical element

Earth science; Mapping science

(1) A point, line, surface, solid or hyper solid which exists as an undefined part, postulate or geometrical theory. (2) A point, line, surface or solid, or a combination of these, which is the ...