JonoThora: Psionics expansion (01a + 01b): content authored / LaTeX-restored per local submodule; lint-clean.

2026-05-11T20:48:27Z

Psionics expansion (01a + 01b): content authored / LaTeX-restored per local submodule; lint-clean.

New page

{{Audience_Sidebar
| difficulty = Intermediate
| reading_time = 5 minutes
| prerequisites = [[Psionics_Primer]]; superconductivity basics.
| if_too_advanced_see = [[Podkletnov_Experiment]]
| if_you_want_the_math_see = [[Podkletnov_Experiment]]
}}

{{Person_Vital_Stats
| name = Evgeny ("Eugene") Podkletnov
| birth = 1955
| death = (living)
| nationality = Russian
| field = Materials science; superconductor physics
| affiliation = Tampere University of Technology (Finland), 1980s-1990s; subsequent affiliations not public
| key_works = Podkletnov-Nieminen 1992 ''Physica C''; Podkletnov-Modanese 2001
| era = Late 20th to early 21st century
}}

== Summary ==

'''Evgeny Podkletnov''' is a Russian materials scientist who, while at Tampere University of Technology in Finland in 1992, reported an apparent '''gravity-shielding effect''' over a rotating YBCO superconductor disc. The 1992 ''Physica C'' paper (Podkletnov-Nieminen) describes a ~ 0.05% weight reduction in objects suspended above the rotating disc. The result has never been independently replicated despite numerous attempts (notably by NASA's Marshall Space Flight Center, 1995-2002, with Ning Li and Ron Koczor); the original claim has accordingly been the subject of long-running controversy.

== Life ==

Podkletnov completed his materials-science training in the Soviet Union and joined Tampere University of Technology (Finland) in the 1980s. There he worked on high-temperature-superconductor materials processing — yttrium-barium-copper-oxide (YBCO) bulk samples.

After the 1992 paper became internationally controversial, Tampere University distanced itself from the work. Podkletnov has retained a low public profile since the late 1990s; his subsequent institutional affiliations are not part of the public record.

== Key Contributions ==

=== 1992 gravity-shielding claim ===

In Podkletnov & Nieminen 1992 ''Physica C'' 203: 441, the authors describe an apparatus consisting of a rotating YBCO disc at low temperature, with RF excitation of the superconducting state. Objects suspended above the disc reportedly showed:

* Weight reduction of ~ 0.05% (depending on disc rotation speed and RF excitation).
* The reduction was reported to extend through metal shielding and to cones of influence extending upward into the building.

The paper was initially accepted for ''Physica C'' (a mainstream condensed-matter journal) but later withdrawn at the editor's request after concerns about co-author non-confirmation. A revised version was published in 1997.

=== 2001 impulse-gravity claim (with Modanese) ===

Podkletnov & [[Giovanni_Modanese|Modanese]] 2001 ''Foundations of Physics Letters'' 14: 339 describe a different apparatus producing a "gravity impulse" — a brief gravitational disturbance propagating along the axis of a high-voltage discharge through a YBCO disc. Reported beam-like effects at ~ 1 g acceleration over millisecond pulses.

This result has not been independently replicated either.

== Reception ==

Podkletnov's claims are among the most contested in the alternative-physics literature. The principal obstacles to independent confirmation:

* Detailed apparatus parameters have not been fully published.
* Podkletnov has been reluctant to participate in replication attempts at other institutions.
* High-quality YBCO disc fabrication at the necessary scale and quality is technically demanding.
* NASA / MSFC attempted replication (1995-2002, with Ning Li and Ron Koczor) failed to reproduce the effect despite substantial effort.

The mainstream scientific community treats the 1992 result as unsupported. A minority of researchers (Modanese, Solomon, others) continue to investigate the theoretical possibility within frameworks consistent with the Podkletnov claims.

In the [[Psionics|psionic framework]], the Podkletnov claims are an interesting borderline case: if real, they would be consistent with ψ-field-mediated gravitational anomalies via superconductor coupling; the failure of replication argues against this. The framework's position is to require independent replication before treating the claim as established.

== Bibliography ==

* Podkletnov, E., Nieminen, R. (1992). "A possibility of gravitational force shielding by bulk YBa2Cu3O7-x superconductor." ''Physica C'' 203: 441–444.
* Podkletnov, E. (1997). "Weak gravitation shielding properties of composite bulk YBa2Cu3O7-x superconductor below 70 K under e.m. field." arXiv:cond-mat/9701074.
* Podkletnov, E., Modanese, G. (2001). "Impulse gravity generator based on charged YBa2Cu3O7-y superconductor with composite crystal structure." ''Foundations of Physics Letters'' 14: 339–361.

== See Also ==

* [[Giovanni_Modanese]]
* [[Ning_Li]]
* [[Podkletnov_Experiment]]
* [[Gravitomagnetic_London_Moment]]
* [[Superconductor_Gravity_Experiments]]

== External Links ==

* Wikipedia: Eugene Podkletnov

== References ==

* As above.
* Koczor, R. (2002). "NASA gravity-shielding replication report" (internal NASA MSFC memorandum, partially declassified).

[[Category:Psionics]]
[[Category:Biographies]]
[[Category:Gravitomagnetism]]
[[Category:Controversial Claims]]

Evgeny Podkletnov - Revision history

JonoThora: Psionics expansion (01a + 01b): content authored / LaTeX-restored per local submodule; lint-clean.