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Measurement of Density Inhomogeneity for Glass Pendulum |
| LIU Lin-Xia1, LIU Qi1, SHAO Cheng-Gang1, ZHANG Ya-Ting1, LUO Jun1, Vadim Milyukov2 |
| 1Department of Physics, Huazhong University of Science and Technology, Wuhan 4300742Sternberg Astronomical Institute, Moscow State University, Moscow, 119992, Russia |
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| Cite this article: |
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LIU Lin-Xia, LIU Qi, SHAO Cheng-Gang et al 2008 Chin. Phys. Lett. 25 4203-4206 |
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Abstract The density inhomogeneity of a glass pendulum is determined by an optical interference method. The relative variations of the densities over a volume with sizes of 5×5×5mm3 are (0.64\pm 0.97)×10-5 and (0.99±0.92)×10-5 for the K9 glass and silica glass pendulum, respectively. These variations of densities contributing to the relative uncertainties of the Newtonian gravitational constant G are 0.20ppm and 0.21ppm in our experiment on measurement of G.
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| Keywords:
04.80.Cc
06.20.Jr
07.60.Ly
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Received: 01 January 1900
Published: 27 November 2008
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| PACS: |
04.80.Cc
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(Experimental tests of gravitational theories)
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06.20.Jr
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(Determination of fundamental constants)
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07.60.Ly
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(Interferometers)
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[1] Cook S A 1988 Rep. Prog. Phys. 51 707
[2] Cavendish H 1798 Philos. Trans. Roy. Soc. 88469
[3] Gundlach J H et al 1996 Phys. Rev. D 54R1256
[4] Gillies G T 1997 Rep. Prog. Phys. 60 151
[5] Luo J et al 1999 Phys. Rev. D 59 0420001-1
[6] Newman R D and Bantel M K 1999Meas. Sci. Technol.10 445
[7] Speake C C 2005 Phil. Trans. R. Soc. A. 3632265
[8] Fixler J B et al 2007 Science 315 74
[9] Luther G G and Towler W R 1982 Phys. Rev. Lett. 48 121
[10] Hu Z K, Guo J Q and Luo J 2005 Phys. Rev. D 71 127505-1
[11] Hu Z K, Luo J and Hsu H 1999 Phys. Lett. A 264 112
[12] Luo J, Hu Z Kand Hsu H 2000 Rev. Sci. Instrum. 71 1524
[13] Maj S 1984 Phys. Chem. Minerals 10 133
[14] Marler B 1988 Phys. Chem. Minerals 16 286
[15] Scholze H 1977 Glas Natur, Struktur undEigenschaften (Berlin: Springer)
[16] Huggins M L and Sun K H 1943 J. Amer. Ceram. Soc.26 4
[17] Mandarino J A 1976 Can. Mineral. 14 498
[18] Kitamura N, Fukumi K and Nishii J 2007 J. Appl.Phys. 101 123533-1 |
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