A proposal on the test of general relativity by clock transportation experiments |
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Authors: | WenBin Shen Jinsheng Ning Dingbo Chao Jinnan Liu |
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Affiliation: | 1. Department of Geophysics/Key Laboratory of Geospace Environment and Geodesy, School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;2. National GNSS Engineering Center, Wuhan University, Wuhan 430079, China |
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Abstract: | We propose a test of the gravitational time dilation in general relativity by long term clock comparison between two stations separated in height. The geopotential difference between the two National time keeping centers in China, Lintong (A) and Beijing (B) is around 4000 geopotential unit, which corresponds to the height difference of 400 m. Two clocks CA and CB are fixed at stations A and B, respectively, which are synchronized at beginning by a portable clock C in a short time period with go-back synchronization approach. After one month, the clock C is again transported between A and B , comparing the records of the keeping time by clocks CA and CB, respectively. Calculations show that, after one month, the difference of the time durations between the clocks CA and CB is around 121 ns, if general relativity is correct. |
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Keywords: | Test of general relativity Clock transportation experiments Time duration comparison |
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