Any Explanations?
Theoretical explanations of the Tampere experiment have been proposed in a paper by Dr. Giovanni Modanese of Italy. It is essentially quantum gravity, a very esoteric and not totally convincing. Dr. Ning Li and Dr. Douglas Torr at the University of Alabama, Huntsville are also doing some research in this area.
However, these are all very complicated attempts at trying to understand the effect. Could there be another but much simpler explanation? Feel free to read some notes on the Tampere experiments as well as read a white paper on an electric field with similar properties to that of gravity:
Here is a list of some available papers:
1) Podkletnov, 1992 - the first paper appeared in Physia C 1992: "A possibility of gravitational force shielding by bulk YBa_2_Cu_3_O_7-x_ superconductor." (online paper)
2) Podkletnov, Jan. 1997 - the most recent paper: "Weak gravitation shielding properties of composite bulk YBa_2_Cu_3_O_7-x superconductor below 70 K under e.m. field." (postscript paper, printable online figures in Web form and figures in MS-Word)
3) Modanese, Nov. 1996: "Possible quantum gravity effects in a charged Bose condensate under variable e.m. field." (postscript paper, including the figure)
4) Modanese, Jan. 1996: "Updating the Theoretical Analysis of the Weak Gravitational Shielding Experiment." (postscript paper)
5) Modanese, May 1995: "Theoretical Analysis of a Reported Weak Gravitational Shielding Effect." (postscript paper), including the figure)
6) Rognerud, 1991: Free Fall of Elementary Particles. This paper is a review of the problem of the observable action of gravitational forces on charged particles. [It also explains the similarity of a special kind of electric field to that of gravity.]