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Earth science

Any of several geological sciences that are concerned with the earth, its origins, and all of its various structures and physical forms and phenomena.

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Earth science > Mapping science

Birch discontinuity

Earth science; Mapping science

A seismic discontinuity at a depth of about 900 km.

Boole's rule

Earth science; Mapping science

The Newton Cotes formula for N = 4. Simpson's rule is preferred to Boole's rule for simplicity; Weddle's rule is preferred for both accuracy and simplicity.

Besselian element

Earth science; Mapping science

One of a set of numbers and a system of coordinates, introduced by Bessel, for predicting the progress of solar eclipses and of occultations. The coordinate system has its ...

national boundary

Earth science; Mapping science

A boundary between countries. Such a boundary is established by the sovereign powers concerned.

Cassinis's gravity formula

Earth science; Mapping science

The formula adopted in 1930 by the International Association of Geodesy and called the International Gravity Formula.

cartouche

Earth science; Mapping science

A panel on a map, often with decoration, inclosing the title or other legends, the scale, etc.

buys-ballot's law

Earth science; Mapping science

Facing the wind in the northern hemi-sphere, atmospheric pressure decreases toward the right and increases towards the left; the reverse is true in the southern hemisphere.