The Jeverdan-Rusu-Antonescu Eclipse Effectc.
•cwas first observed during a total solar eclipse in Bucharest, Romania in 1961 Jeverdan et al. were at the time completely unaware of Allaisfs work. During the eclipse, the period of a sophisticated Foucault pendulum (about 25 meters in length) shortened markedly. We consider that the Allais effect and the JRA effect are probably two aspects of one underlying phenomenon.