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a. An instrument to measure the value of gravity or for measuring
variations in the magnitude of the Earth's gravitational field.
Measurements of gravity are accomplished generally by one of three
methods: dropped ball, pendulum, or spring gravimeter. The latter type of
gravimeter, which is based upon the principle of the weighted
spring--where the length or measured variations in the length of the
spring are a function of the gravitational field at different locations,
is the type widely used today. See also: Graf sea gravimeter;
gravitational prospecting. Hunt
b. An instrument for determining specific gravities, particularly of
liquids. See also: hydrometerc. An instrument that measures variations in the density of underlying
rocks. BS, 9
d. An instrument for measuring variations in the gravitational field,
generally by registering differences in the weight of a constant mass as
the gravimeter is moved from place to place. Syn: gravity meter See also: astatic gravimeter
Source:
Dictionary of Mining, Mineral, and Related Terms
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