A simple pendulum laser interferometer for determining the gravitational constant-Reference-Cited by-同舟云学术

A simple pendulum laser interferometer for determining the gravitational constant

Published:2014-10-13 Issue:2026 Volume:372 Page:20140024
ISSN:1364-503X
Container-title:Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
language:en
Short-container-title:Phil. Trans. R. Soc. A.

Author:

Parks Harold V.¹²,Faller James E.¹³

Affiliation:

1. JILA, University of Colorado and National Institute of Standards and Technology, Boulder, CO 80309, USA

2. Sandia National Laboratories, Albuquerque, NM 87185, USA

3. Institute for Gravitational Research, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, UK

Abstract

We present a detailed account of our 2004 experiment to measure the Newtonian constant of gravitation with a suspended laser interferometer. The apparatus consists of two simple pendulums hanging from a common support. Each pendulum has a length of 72 cm and their separation is 34 cm. A mirror is embedded in each pendulum bob, which then in combination form a Fabry–Perot cavity. A laser locked to the cavity measures the change in pendulum separation as the gravitational field is modulated due to the displacement of four 120 kg tungsten masses.

Publisher

The Royal Society

Subject

General Physics and Astronomy,General Engineering,General Mathematics

Link

https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2014.0024

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