Definitions used across HSARPA dossiers. Each term is framed to distinguish established science, inference, and hypothetical engineering rather than collapsing them into one claim.
An apparent gravity-like load produced by acceleration or rotation. Generating a local gravitational field directly is a separate and far more speculative claim.
Related dossier: Gravity Control and Gravitational Field Manipulation →A measurable quantum-field effect in which boundary conditions alter allowed vacuum modes and produce a force between closely spaced surfaces. It is not by itself evidence of extractable unlimited vacuum power.
Related dossier: Quantum Vacuum and Zero-Point Energy Engineering →The proposal that quantum effects or other physical constraints prevent macroscopic closed timelike curves from becoming usable time machines.
Related dossier: Temporal Engineering: Time Displacement, Retrocausality and Causality →A mathematically allowed spacetime path that returns to an earlier event on its own worldline. Mathematical existence does not establish physical construction or stability.
Related dossier: Temporal Engineering: Time Displacement, Retrocausality and Causality →A broad label for hypothetical stress-energy configurations with properties outside ordinary matter, often invoked in wormhole or warp-geometry models. The term does not identify a known engineering material.
Related dossier: Dimensional Engineering: Wormholes, Extra Dimensions and Traversable Spacetime →Controllable transfer of classical information outside the ordinary light cone. No verified experiment currently demonstrates such signaling.
Related dossier: Nonlocal Communication: Can Information Travel Faster Than Light? →A verified general-relativistic effect in which rotating mass influences nearby inertial frames. The observed effect is extremely small and is not equivalent to practical gravity control.
Related dossier: Gravity Control and Gravitational Field Manipulation →The verified difference in elapsed proper time between clocks located in different gravitational potentials.
Related dossier: Temporal Engineering: Time Displacement, Retrocausality and Causality →The property that relates applied force to acceleration. Claims of controllable inertial-mass modification require evidence beyond ordinary momentum exchange, vibration, thermal drift, or electromagnetic coupling.
Related dossier: Inertial Mass Modification and Reactionless Propulsion →A proposed propulsion concept that seeks transient mass fluctuations linked to Machian interpretations of inertia. Reported thrust remains disputed and requires independent artifact-resistant replication.
Related dossier: Inertial Mass Modification and Reactionless Propulsion →An engineered structure whose geometry creates effective electromagnetic, acoustic, thermal, or mechanical properties not available from the bulk constituent material alone.
Related dossier: Metamaterials, Programmable Matter and Engineered Physical Properties →A context-dependent quantum-field concept in which local energy density can fall below a reference vacuum value. Known effects are constrained and do not establish macroscopic stores of freely usable negative energy.
Related dossier: Quantum Vacuum and Zero-Point Energy Engineering →The quantum-mechanical result that entanglement correlations alone cannot be controlled to send ordinary classical messages faster than light.
Related dossier: Nonlocal Communication: Can Information Travel Faster Than Light? →Apparent motion caused by a change in viewing position. In airborne imagery, unknown range combined with observer motion can make a slow or distant object appear to move unusually fast.
Related dossier: UAP Technology Claims: Sensor Anomalies, Inference and Evidence →Propulsion that does not consume onboard reaction mass in the conventional sense. A photon rocket is propellantless but still exchanges momentum through emitted radiation.
Related dossier: Inertial Mass Modification and Reactionless Propulsion →A quantum correlation between systems that can violate classical Bell-type expectations. Entanglement does not provide a verified channel for controllable faster-than-light messaging.
Related dossier: Nonlocal Communication: Can Information Travel Faster Than Light? →A claimed propulsion mechanism that would accelerate a closed system without an external momentum exchange. Such a demonstration would require unusually strong controls and independent replication.
Related dossier: Inertial Mass Modification and Reactionless Propulsion →A protocol-based claim that a person can describe a distant or hidden target without ordinary sensory access. The reported literature is methodologically disputed and lacks a broadly accepted physical mechanism.
Related dossier: Anomalous Cognition: Telepathy, Remote Viewing and Information Limits →A class of interpretations or models in which later boundary conditions can be represented as influencing earlier descriptions. This is not the same as a verified ability to send a message into the past.
Related dossier: Temporal Engineering: Time Displacement, Retrocausality and Causality →The proposition that observed reality is implemented by an external computational substrate. Existing physical tests can constrain specific models but do not uniquely demonstrate an external simulator.
Related dossier: Simulation Hypothesis and Reality Engineering →An observable signal, chemical pattern, structure, or artifact that could indicate technological activity. A credible candidate must survive natural and instrumental false-positive analysis.
Related dossier: Technosignatures: How Would We Recognize Nonhuman Technology? →A verified relativistic difference in elapsed proper time caused by relative velocity or gravitational potential. It permits asymmetric forward aging without establishing backward time travel.
Related dossier: Temporal Engineering: Time Displacement, Retrocausality and Causality →A hypothetical spacetime geometry connecting separated regions while permitting passage through the throat. Proposed models generally require stress-energy conditions not known to be engineerable at useful scales.
Related dossier: Dimensional Engineering: Wormholes, Extra Dimensions and Traversable Spacetime →A label for observations that have not yet been confidently identified. Unidentified or unresolved does not by itself mean technologically extraordinary or extraterrestrial.
Related dossier: UAP Technology Claims: Sensor Anomalies, Inference and Evidence →Energy associated with the ground state of quantum fields. Observable vacuum phenomena do not establish a cyclic process that produces net usable energy without an external input.
Related dossier: Quantum Vacuum and Zero-Point Energy Engineering →A spacetime geometry connecting otherwise separated regions. Some solutions are mathematical bridges but are not traversable, stable, or known to exist physically.
Related dossier: Dimensional Engineering: Wormholes, Extra Dimensions and Traversable Spacetime →A synthetic information-bearing polymer that uses alternatives to the standard DNA or RNA backbone. Laboratory XNAs show biochemical design freedom but do not prove a separate natural biosphere.
Related dossier: Alternative Life: Shadow Biospheres, Exotic Biochemistry and Non-DNA Organisms →The minimum energy associated with a quantum degree of freedom. Its existence does not imply that unlimited net work can be extracted from a system already in its ground state.
Related dossier: Quantum Vacuum and Zero-Point Energy Engineering →