| 11. | During this excursion, the crew collected of lunar samples and took nine gravimeter measurements.
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| 12. | Corner reflector drops inside an absolute gravimeter.
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| 13. | LaCoste's most famous invention is the ship, and aircraft-mounted gravimeter.
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| 14. | Other instruments such as gravimeters and magnetometers are also used in the search for petroleum.
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| 15. | Isachsen took a gravimeter along on two hikes up the mountain and took regular readings.
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| 16. | In 1915 he wrote his dissertation on the defects of the gravimeters used at that time.
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| 17. | A second device ( the " Traverse Gravimeter Experiment " ) functioned as anticipated.
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| 18. | Geophysicists using gravimeters that measure differences in the Earth's gravity have known about it for years.
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| 19. | Synchronized pendulums have been used in clocks and were widely used in gravimeters in the early 20th century.
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| 20. | Gravity measurements on land can be made using gravimeters deployed either on the surface or in helicopter flyovers.
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