James Cox antigravity classification (1998)
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Contents 4
| Date | January 1998 |
|---|---|
| Topics | Propulsion & physics (topic) |
| People | Thomas Townsend Brown, Eugene Podkletnov |
| Testimony | Shellenberger testimony, p. 130 |
| Year | 1998 in UFO history |
| Timeline | 1998 on the UAP Timeline |
| Sources | 3 |
James Cox antigravity classification (1998) — An antigravity newsletter proposes seven possible types of antigravity devices.
In the January–February 1998 issue of the newsletter Antigravity News and Space Drive Technology, writer James Cox proposed a scheme for classifying claimed antigravity devices into seven types. These included mechanical devices using spinning masses, based on work by Eric Laithwaite and others; acoustic devices said to use vibration; electrostatic devices like Thomas Townsend Brown's; high-frequency electromagnetic devices; solid-state devices such as Podkletnov's superconducting disc; and biological or psychic approaches.
The classification gives a snapshot of the fringe research scene of the late 1990s, when the internet was spreading information about claimed antigravity inventions. It includes historical claims like John Keely's 19th-century "etheric" machines and stories of Tibetan monks levitating stones with sound.
None of these devices has been proven to work under controlled conditions. Discover magazine and other outlets have chronicled how antigravity research faded after the 1990s, as replications failed.
In the testimony
The testimony cites: (I) Mechanical using high speed rotation based on the work of Laithwaite, Wallace, Kidd, McCabe, Stratchen, Delroy, Foster, Dean, Forward, dePalma, Hayasaka and Cowlishaw.; (II) Acoustical with no moving parts and employ vibration to alter nuclear interactions with gravity based on the work of Keely, Leedskelstein and Tibetan stone levitation.; (III) Rotating disc/cone using stationary electrodes at high voltage based on the work of T.T. Brown/Bielfeld and Bahnson, Naudin, Hartman, Nipher, Pages, Kelly, Rieken, Searl, Hammel, Davidson, Saxl,; (IV) AC/RF or microwave EM devices based on the work of Alzofon, Tesla, Littlejohn, Sweet, Nielsen, Seike, Hutchingson, Farrow, Bielik, Zinser, Peshka, Schlecker and Smith..
People and topics
- Anti-gravity — The idea of cancelling or controlling gravity for propulsion.
- Thomas Townsend Brown — Physicist and inventor who promoted "electrogravitics" and proposed Project Winterhaven.
- Eugene Podkletnov — Russian engineer who claimed spinning superconductors reduce gravity.
On the Timeline
- Steve Wilson and Project Pounce (19 August 1997) — A retired Air Force colonel claims a secret space program shoots down unfriendly UAP.
- Bigelow's expectation of a UFO announcement (1998) (11 January 1998) — Bigelow tells Vallée he feels a dramatic UAP development is coming soon.
See every 1998 event on the UAP Timeline →
References
- James Cox, 'Classification scheme for antigravity devices' (1998) — archive · geocities.ws · archived copy
- Whatever happened to antigravity research? — Discover · discovermagazine.com · archived copy
- bibliotecapleyades.net · bibliotecapleyades.net · archived copy
This page was last edited on 29 October 2026. Articles are written in our own words from the sources listed under References; disputed claims are attributed to the people who made them.
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