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Ravitational Magnetism: An Update

  • Saul-Paul Sirag
Part of the Fundamental Theories of Physics book series (FTPH, volume 126)

Abstract

Gravitational magnetism (or the Blackett effect) is the generation of a magnetic field by an electrically neutral rotating mass, whose magnitude is determined by analogy with the magnetic field generated by a rotating electric charge. Since 1947, there is increasing evidence for this effect by the measurements of the magnetic fields of the solar planets, the sun, other stars, and even pulsars, as well as the galactic magnetic field. However, the attempt to measure this effect in the laboratory depends on the ability to measure extremely weak magnetic fields and the shielding of extraneous magnetic fields. Early attempts to measure this effect in the laboratory depended on ad hoc extensions of the simple rotational version of gravitational magnetism. Recently there have been more sophisticated laboratory approaches. Also the extended observational evidence has generated a plethora of theoretical attempts to derive the Blackett equation in a larger context. Of particular interest is the work of R.I. Gray, who performed an advanced version of Blackett’s static experiment, and also related the Blackett effect to several other theoretical and empirical relations particularly the Wesson effect--the constancy of the ratio of spin to mass-squared for planetary, stellar, and galactic bodies. Pauli’s anomalous magnetic moment (as a Blackett effect) is also considered as a bridge to the gravitomagnetic field generated by superconductors.

Keywords

Anomalous Magnetic Moment Gravitational Magnetism Astronomical Object Nonminimal Coupling Macroscopic Body 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  • Saul-Paul Sirag
    • 1
  1. 1.International Space Sciences Organization (ISSO)San Francisco

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