摘要Distribution of film thickness coated on the pendulum of measuring the Newton gravitational constant G is determined with a weighing method by means of a precision mass comparator. The experimental result shows that the gold film on the pendulum will contribute a correction of -24.3ppm to our G measurement with an uncertainty of 4.3ppm, which is significant for improving the G value with high precision.
Abstract：Distribution of film thickness coated on the pendulum of measuring the Newton gravitational constant G is determined with a weighing method by means of a precision mass comparator. The experimental result shows that the gold film on the pendulum will contribute a correction of -24.3ppm to our G measurement with an uncertainty of 4.3ppm, which is significant for improving the G value with high precision.
LIU Lin-Xia;GUAN Sheng-Guo;LIU Qi;ZHANG Ya-Ting;SHAO Cheng-Gang;LUO Jun. Precision Measurement of Distribution of Film Thickness on Pendulum for Experiment of G[J]. 中国物理快报, 2009, 26(9): 90402-090402.
LIU Lin-Xia, GUAN Sheng-Guo, LIU Qi, ZHANG Ya-Ting, SHAO Cheng-Gang, LUO Jun. Precision Measurement of Distribution of Film Thickness on Pendulum for Experiment of G. Chin. Phys. Lett., 2009, 26(9): 90402-090402.
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