What is a gravimeter used for?
What is a gravimeter used for?
The gravimeter is the measuring instrument of the gravitational field of Earth at specific locations. The instrument works on the principle of measuring constant downward acceleration of gravity. There are two types of gravimeters: absolute and relative.
What is stable gravimeter?
An instrument that uses a high order of optical and/or mechanical magnification so that an extremely small change in the position of a weight or associated property can be accurately measured.
How does a Worden gravimeter work?
A compact temperature-compensated gravity meter, in which a system is held in unstable equilibrium about an axis, so that an increase in the gravitational pull on a mass at the end of a weight arm causes a rotation opposed by a sensitive spring.
How is gravity calculated?
In SI units, G has the value 6.67 × 10-11 Newtons kg-2 m2. The acceleration g=F/m1 due to gravity on the Earth can be calculated by substituting the mass and radii of the Earth into the above equation and hence g= 9.81 m s-2. …
When was the Worden gravimeter given to the US?
One (#2,674,887), granted to Sam P. Worden in 1954, described an instrument “which is of very simple construction and which, at the same time, will permit very delicate measurements, and is smaller in size and of less weight and more rugged than conventional types of gravity meters now in use.”
When did the A-10 portable gravimeter user’s manual come out?
A-10 Portable Gravimeter User’s Manual A-10 Portable Gravimeter User’s Manual JULY 2008 Micro-g LaCoste A10 User’s Manual TABLE OF CONTENTS
What do you need to know about a gravimeter?
A gravimeter is simply a very precise weighing machine used to find the weight of a certain lump of metal or other material at a series of stations distributed over the area being surveyed.
What is the purpose of a gravity meter?
Gravimeters (gravity meters) are extremely precise instruments that measure the earth’s gravity at a specific location. Gravimeters are often used by prospectors to locate subterranean deposits of valuable natural resources (mainly petroleum) as well as by geodesists to study the shape of the earth and its gravitational field.