Published December 2008 | Version v1
Journal article Metadata-only

Measurement of Density Inhomogeneity for Glass Pendulum

Creators

  • 1. Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 (China)
  • 2. Sternberg Astronomical Institute, Moscow State University, Moscow, 119992 (Russian Federation)

Description

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 × 5 mm3 are (0.64 ± 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 0.20 ppm and 0.21 ppm in our experiment on measurement of G

Availability note (English)

Available from http://dx.doi.org/10.1088/0256-307X/25/12/005

Additional details

Identifiers

DOI
10.1088/0256-307X/25/12/005;

Publishing Information

Journal Title
Chinese Physics Letters
Journal Volume
25
Journal Issue
12
Journal Page Range
p. 4203-4206
ISSN
0256-307X
CODEN
CPLEEU

INIS

Country of Publication
China
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
44113040
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
DENSITY; FUNDAMENTAL CONSTANTS; GLASS; GRAVITATION; INTERFERENCE; MECHANICAL VIBRATIONS; OSCILLATIONS; SILICA; TIME MEASUREMENT; VARIATIONS
Descriptors DEC
MINERALS; OXIDE MINERALS; PHYSICAL PROPERTIES