| Precise Determination of Period of a Torsion Pendulum in Measurement of Gravitational Constant |
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| 引用本文： | 罗杰 王典洪 刘祺 邵成刚. Precise Determination of Period of a Torsion Pendulum in Measurement of Gravitational Constant[J]. 中国物理快报, 2005, 22(9): 2169-2172 |
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| 作者姓名： | 罗杰 王典洪 刘祺 邵成刚 |
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| 作者单位： | [1]Faculty of Mechanical and Electronic Engineering, China University of Geosciences, Wuhan 430074 [2]Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 |
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| 基金项目： | Supported by the National Key Basic Research and Development Programme of China under Grant No 2003CB716300, and the National Natural Science Foundation of China under Grant No 10121503. |
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| 摘 要： |
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| 关 键 词： | 转矩摆动 环境扰动 噪声因子 精密度 |
| 收稿时间： | 2005-04-30 |
| 修稿时间： | 2005-04-30 |
Precise Determination of Period of a Torsion Pendulum in Measurement of Gravitational Constant |
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| Luo Jie;Wang DianHong;Liu Qi;Shao ChengGang. Precise Determination of Period of a Torsion Pendulum in Measurement of Gravitational Constant[J]. Chinese Physics Letters, 2005, 22(9): 2169-2172 |
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| Authors: | Luo Jie Wang DianHong Liu Qi Shao ChengGang |
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| Abstract: | The period of a torsion pendulum would vary under the disturbances of environmental noise factors. In order to subtract the period of the pendulum from external influence, we employ the correlation method to determine the period with a high precision. Theoretical analysis shows that the relative precision is improved to be proportional to 1/m^3/2 with the number of the period m, compared with the conventional statistical mean that is proportional to 1/m^1/2, which is significant for the determination of gravitational constant with the swing time method. |
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