| His submarine device was used from 1923 until the late 1950s, when spring gravimeters on surface ships superseded it. |
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| It continues to enable us to improve the performance of gravimeters and other in-house applications. |
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| Modern gravimeters are equipped with frequency-stabilized laser sources used for the determination of the position of the falling test mass. |
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| Later, precise spring gravimeters were developed, eliminating the use of pendulums. |
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| In some cases, however, the raw data cannot be provided by the operators because it is not accessible due to the design of the gravimeters. |
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| About 25 gravimeters will participate in the international comparison, of which 17 will provide results for the key comparison. |
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| He is the chairman of Working Group 6 on comparisons of absolute gravimeters of the International Gravity and Geoid Commission. |
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| The links between the sites of the BIPM gravity network were compared using both absolute and relative gravimeters. |
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| This software allows a flexible means of realizing the various measurement strategies and data comparison from different gravimeters. |
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| In conjunction with these measurements comparisons of relative gravimeters were also arranged. |
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| In gravimetry itself, we have published the results of the 2001 international comparison of absolute gravimeters using novel analytical software. |
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| This used orbiting gravimeters to try to measure changes in ice cover from effects on the local gravitational field. |
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| Fibres of vitreous silica are essential for precision instruments, such as balances, galvanometers, and gravimeters. |
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| These gravimeters measure the acceleration of a falling corner cube reflector in a vacuum. |
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| In the past year, we have devoted more effort to gravimetry, improving local reference systems and measurement systems in preparation for the next international comparison of gravimeters. |
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| Spring gravimeters and most likely an air transport were used for the connection measurements. |
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| In the run up to July's eclipse, Chinese researchers have prepared eight gravimeters and two pendulums spread across six monitoring sites. |
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| More prosaic technologies are also on in the pipeline, including quantum gravimeters that can map underground pipes and cables before roads are dug up. |
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| The long-standing series of comparisons of absolute gravimeters at the BIPM is strongly supported by the International Union of Geophysics and Geodesy. |
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| The ability to perform these at the same time as the comparison of absolute and relative gravimeters is held, gives the BIPM a distinct advantage over other possible sites for this comparison. |
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| In the run up to Julys eclipse, Chinese researchers have prepared eight gravimeters and two pendulums spread across six monitoring sites. |
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| The changing gravity field can be detected by repeated land measurements with absolute gravimeters and recently by the GRACE satellite mission. |
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| The uncertainty of surveys with this instrument does not exceed the uncertainty of LCR gravimeters. |
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| Furthermore, a study of the beam characteristics in the interferometers of the participating gravimeters is planned, in order to account for small corrections related to diffraction effects. |
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