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The paper proposes an alternative to the Foucault pendulum for detectingvarious movements of rotation of the Earth. Calculations suggest that if theduration of a "free" fall becomes longer the eastward deflection will beamplified in proportion with the increased duration. Instead of 20 micrometersfor a one-meter fall, one can expect deflections more than 1,000 times largerwhen the fall lasts a few minutes. The method proposed in this paper consistsin using the buoyancy of a (non viscous) liquid in order to work in reducedgravity. Not surprisingly, as in many astronomical observations, the mainchallenge is to minimize the level of "noise". Possible sources of noise arediscussed and remedies are proposed. In principle, the experiment should bedone in superfluid helium. However, a preliminary experiment done in water gaveencouraging results in spite of a fairly high level of noise. In forthcomingexperiments the main objective will be to identify and eliminate the mainsources of noise. This experiment differs from the Foucault pendulum by itsgreater flexibility. By adequately selecting the major parameters, e.g.duration of the fall, viscosity of the fluid, size of the falling body, one canchange the deflection target. It is hoped that the present paper will encouragenew experiments in this direction.

How can one detect the rotation of the Earth "around the Moon"? Part 2: Ultra-slow fall