• DocumentCode
    1229704
  • Title

    Toward the Determination of G With a Simple Pendulum

  • Author

    Berutto, Marco ; Ortolano, Massimo ; Mura, Alberto ; Periale, Felice ; De Marchi, Andrea

  • Author_Institution
    Dipt. di Elettronica, Politecnico di Torino
  • Volume
    56
  • Issue
    2
  • fYear
    2007
  • fDate
    4/1/2007 12:00:00 AM
  • Firstpage
    249
  • Lastpage
    252
  • Abstract
    An experiment aimed at the determination of the constant G was started in 1995 at the Politecnico di Torino, Torino, Italy, based on measurement of the period of a simple pendulum. Two source masses are periodically moved, orthogonally to the swinging plane, between two fixed positions. An optical system detects the pendulum perigee, and an electronic circuit measures the period. This paper describes recent progress and results, in which an unexpected effect, which is currently under investigation, limits the desired 10-4 uncertainty level to 3.2%
  • Keywords
    Q-factor measurement; gravitational constant; measurement uncertainty; pendulums; Q measurement; constant gravity; electronic circuit; gravity measurement; optical system; pendulum; Electrostatic measurements; Frequency estimation; Laser stability; Mathematical model; Noise measurement; Optical detectors; Optical pumping; Q factor; Q measurement; Volume measurement; $Q$ measurement; Gravity measurement;
  • fLanguage
    English
  • Journal_Title
    Instrumentation and Measurement, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9456
  • Type

    jour

  • DOI
    10.1109/TIM.2007.890785
  • Filename
    4126832
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1229704