Coupled modes of the torsion pendulum |
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| Authors: | Xiang-Dong Fan Lin-Xia Liu Jun Luo |
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| Institution: | a Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
b Sternberg Astronomical Institute of Moscow State University, Moscow 119899, Russia |
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| Abstract: | The coupling of the swing modes of a torsion pendulum to the torsional mode has been solved analytically. Our solution provides a clear explanation of why a magnetic damper is effective in suppressing unwanted modes in most gravitational experiments. The analytic solution also shows that the amplitude of the mode coupling is greatest at the lowest frequencies. This explains why mode coupling at the lowest frequency is all that is observed in the experiments reported here. |
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| Keywords: | 04 80 Cc 02 60 Cb |
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