Isaac Scientific Publishing

Advances in Astrophysics

Anomalies in Pendulum Behaviour Observed During Conjunctions Mercury/Sun on 11 November 2006, 14 July 2009, and 17 November 2015

Download PDF (2580.7 KB) PP. 22 - 35 Pub. Date: May 1, 2016

DOI: 10.22606/adap.2016.11002


  • Dimitrie Olenici*
    Astronomical Observatory Department, Stefan cel Mare University, Suceava, Romania


During the Mercury transit on 11 November 2006, the inferior conjunction of Mercury on 14 July 2009, and the occultation of Mercury on 17 November 2015, a series of experiments were carried out to check for anomalous pendulum behaviour. The results confirm the appearance of anomalous variations in the speed of precession of the plane of oscillation of the pendulum (the so-called Allais effect), anomalous variations of the period of oscillation of the pendulum (the so called Jeverdan-Rusu-Antonescu effect), anomalous variations of the proportion between the major and minor semi axes of the ellipse of oscillation of the pendulum, and anomalies in the chirality of revolution of the pendulum around its ellipse of oscillation.


Paraconical, pendulum, syzygy, eclipse, conjunction, opposition, torsind, Allais, effect, precession.


[1] M. Allais, “L'Anisotropie de l'Espace”, Paris, Clement Juglar, 1977.

[2] G.T. Jeverdan, G.I. Rusu and V.I Antonescu, “Preliminary data on the behaviour of the Foucault pendulum during the solar eclipse of 15 February 1961” (in Romanian), An. Univ. Iasi Section I, 7, No. 2, (1961), 457.

[3] D. Olenici, et al. “Short History of Our Research Into Allais and Jeverdan-Rusu-Antonescu Effects”, in “Should the Laws of Gravitation be Reconsidered?”, Hector A. Munera, editor, Apeiron, Montreal, 2011, 207-221.

[4] D. Olenici, et al. “Syzygy Effects Studies Performed Simultaneously with Foucault Pendulums and Torsinds during the Solar Eclipses of 13 November 2012 and 10 May 2013”, International Journal of Astronomy and Astrophysics, 2014, 4, 39-53.

[5] D. Olenici, “The Sarawak antieclipse pendulum experiment”, Anuarul Complexului Muzeal Bucovina, XXXIV-XXXV-XXXVI, Volume 2007-2008-2009, Suceava, 2009.

[6] D. Olenici and A.F. Pugach, “Precise Underground Observations of the Partial Solar eclipse of 1 June 2011 Using a Foucault Pendulum and a very Light Torsion Balance”, International Journal of Astronomy and Astrophyscs, 2012, 2, 204-209.

[7] D. Olenici et al., “Studies on syzygy effects with aerodynamic paraconical pendulum during the transits of Venus of June 8, 2004 and June 6, 2012”, Journal of Advanced Research in Physics, Vol.5, No1, (2015).

[8] A.F.Pugach, “The Torsind - A Device Based on a New Principle for Non-Conventional Astronomical Observations”, International Journal of Astronomy and Astrophysics, 2013, 3, 33-38.

[9] Internet: NASA–SKYCAL Sky Events Calculator; Calsky: Astronomical and Space Calendar; Cybersky.