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Thirty years of progress in absolute gravimetry: a scientific capability implemented by technological advances

J E Faller

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The application of technological advances has dramatically improved our ability to measure the absolute value of g, the free-fall acceleration due to gravity. Over the past thirty years this improvement has been nearly three orders of magnitude! Today, the value of gcan be determined with an accuracy approaching 1 µGal (10-8 m/s2) and measured with a precision that is at least ten times better. This paper reviews the history of and the reasons for this progress as well as taking a look to the future.


PACS

06.30.Gv Velocity, acceleration, and rotation

04.80.Nn Gravitational wave detectors and experiments

95.55.Ym Gravitational radiation detectors; mass spectrometers; and other instrumentation and techniques

93.85.-q Instruments and techniques for geophysical research: Exploration geophysics

01.30.Rr Surveys and tutorial papers; resource letters

Subjects

Instrumentation and measurement

Environmental and Earth science

Education and communication

Gravitation and cosmology

Astrophysics and astroparticles

Dates

Issue 5 (2002)



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