Measurement of gravitational acceleration values at the calibration laboratories in Korea |
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| S.Y.Woo, I.M.Choi, H.W.Song |
- Abstract:
- The most important conversion factor between mass and force is the value g of the acceleration due to gravity. This can be measured with an absolute or relative gravimeter. It depends on the latitude and height above sea level. Values of g at many calibration laboratories in Korea are measured with a relative gravimeter, Model G manufactured by La Coste & Romberg in USA. To improve the measurement performance of the gravimeter, we attached an optical magnifying system instead of microscope eyepiece, which consists of CCD camera and LCD display. This optical system showed to be sufficiently convenient and accurate to provide a practical alternative to the traditional microscopic eyepiece. The observed value of g spans a range of 0.03% between the northernmost and the southernmost calibration laboratory in Korea. In this paper, the improved performance and the detailed gravity measurement results are given.
- Keywords:
- gravity, acceleration, gravimeter, calibration
- Download:
- IMEKO-TC3-2007-112u.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC3
- Event name:
- Cultivating Metrological Knowledge
- Title:
20th Conference on Measurement of Force, Mass and Torque (together with 3rd TC16 Conference on Pressure Measurement & 1st TC22 Conference on Vibration Measurement)
- Place:
- Merida, MEXICO
- Time:
- 27 November 2007 - 01 December 2007