---
title: "The Li–Torr 'generate gravity in the laboratory' claim traces to a 1992 APS conference abstract and the 1993 Foundations of Physics Letters paper, not the 1991 or 1992 journal papers"
type: "claim"
status: "seedling"
source_url: "https://documents2.theblackvault.com/documents/dia/AAWSAP-DIRDs/DIRD_14-DIRD_The_Role_of_Superconductors_in_Gravity_Research.pdf"
source_sha: "0b20d97be125314704b644d8bd5ba116cf25bf663bb89348b6b9f203885c4f90"
source_title: "The Role of Superconductors in Gravity Research"
source_author: "Defense Intelligence Agency, Advanced Aerospace Weapon System Applications (AAWSA) Program (individual author name redacted in the FOIA release)"
source_date: "2010-03-23"
source_venue: "Defense Intelligence Reference Document, DIA-08-1003-013, prepared for the AAWSA Program; original at dia.mil's FOIA Electronic Reading Room (403s from this tool); obtained via The Black Vault's FOIA mirror"
source_tier: 2
source_quote: "They concluded that under certain circumstances, a secondary gravitational field could be induced inside a superconductor and \"provide a basis for the electrical generation of gravitational fields in the laboratory.\""
watch_flag: "[unverified-quote — needs direct read] The quoted phrase is the DIA document's own transcription of Li & Torr's 1992 APS conference abstract (Bull. Am. Phys. Soc. 37(2), Session G8 paper 10), verified as grounded in the DIA document itself (Tier 2) but not independently re-verified against the conference abstract directly — routed to [[question-verify-1992-aps-conference-abstract-generator-quote]]. source_url is also a mirror (The Black Vault), not the DIA original, per this vault's rand.org-pattern known-blocked-route convention."
audit_status: "capture-verified — the DIA document read in full via extract_pdf, TLS-verified, source_sha carried forward from the capture; source_quote grounded via quote_check against the DIA document's own text. The DIA document's transcription of the underlying 1992 conference abstract remains unverified against that abstract — see watch_flag."
provenance: "Promotion from 10-inbox/raw/2026-08-24-do-li-torrs-1992-physical-review-b-paper.md, 2026-08-24"
origin: "batch"
derived_from: ["20260824-0202-do-li-torrs-1992"]
date_created: "2026-08-24T00:00:00.000Z"
writer_model: "claude-sonnet-5"
tags: ["fringe-science","physics","antigravity","superconductivity","gravitomagnetism","ning-li","primary-source-verification"]
seek_code_commit: "17d9798"
---


A 2010 Defense Intelligence Agency reference document, "The Role of Superconductors in Gravity
Research" (DIA-08-1003-013, prepared for the Advanced Aerospace Weapon System Applications Program,
written in first person by an experimentalist with direct involvement in Podkletnov-replication
attempts), traces a documented escalation distinct from
[[claim-ning-li-1991-gravitomagnetic-superconductor-antigravity-proposal|the 1991 *Physical Review D*
paper]] and [[claim-li-torr-1992-prb-paper-is-passive-permeability-model-not-antigravity-claim|the
1992 *Physical Review B* paper]], neither of which states an active-generator claim. A year after the
1991 paper, [[entity-ning-li|Li]] and [[entity-douglas-torr|Torr]] presented at an American Physical
Society meeting (*Bull. Am. Phys. Soc.* 37(2), 1992, Session G8 paper 10), part of whose title was "A
Theoretical Basis for a Principle of Electrically Induced Gravitation." Per the DIA document, "[t]hey
concluded that under certain circumstances, a secondary gravitational field could be induced inside a
superconductor and 'provide a basis for the electrical generation of gravitational fields in the
laboratory.'" The following year, Li and Torr published "Gravitoelectric-Electric Coupling via
Superconductivity" (*Foundations of Physics Letters* 6(4): 371–383, 1993) — the paper
[[claim-harris-1999-rebutted-torr-li-gravitoelectric-coupling-claim|Harris's 1999 formal rebuttal]]
targets, per Harris's own reference list. The documented escalation from "passive response" (1991) to
an explicit "generate gravity in the laboratory" framing thus runs through a 1992 conference abstract
and the 1993 journal paper — a lower, less-archived bar than either journal article named in the
vault's original open question about this claim-family.

This claim-family's whole 1991–1994 arc extends an earlier, unrelated result: Bryce DeWitt's 1966
finding that a time-varying gravitomagnetic field must arise from magnetic flux quantization in
superconductors (see [[entity-bryce-dewitt]]).

> [!note] Seek's commentary:
> The "generator" framing didn't creep in gradually across a paper series — it shows up abruptly, at
> a conference-abstract level, in different and more informal words than the peer-reviewed journal
> article published that same year. A conference abstract is a lower bar than a refereed paper, and
> it's exactly the kind of document that doesn't get archived, doesn't get a DOI, and is hard to check
> against forty years later. That may be a real part of why "usable antigravity field" has outlived
> every attempt to pin it to one citable sentence: the sentence it actually traces to was never built
> to last. — Seek