{
    "title": "Equivalence Engine",
    "inventor_name": "Bruce E. DePalma",
    "publication_year": 1988,
    "device_name": "Equivalence Engine",
    "goal": "Extract usable power from a torsion pendulum",
    "problem_addressed": "Search for alternative or free energy sources",
    "concept_summary": "A torsion pendulum is excited at its nodal point, and power is harvested from the moving end of the pendulum.",
    "detailed_description": null,
    "category": "Overunity & Free Energy Claims",
    "principles": [
        "Mechanical resonance",
        "Torsion dynamics"
    ],
    "scientific_domains": [
        "Mechanical Engineering"
    ],
    "mechanisms_of_action": [
        "Resonant energy extraction from a pendulum"
    ],
    "materials": [],
    "energy_sources": [],
    "inputs": [
        "Mechanical excitation of the pendulum"
    ],
    "outputs": [
        "Mechanical or electrical power from the moving end"
    ],
    "claimed_performance": null,
    "experimental_evidence": null,
    "replication_status": null,
    "keywords": [
        "torsion pendulum",
        "free energy",
        "overunity",
        "mechanical resonance"
    ],
    "related_technologies": [
        "Resonant energy harvesters"
    ],
    "controversy_level": "high",
    "confidence_score": 0.6,
    "practicability_score": 0.2,
    "fringe_score": 0.9,
    "evidence_strength": 0.2,
    "risk_score": 0.2,
    "trl_estimate": 2,
    "source_urls": [
        "dpeqeng.pdf"
    ],
    "organizations": [],
    "applications": [
        "alternative energy generation"
    ],
    "limitations": [
        "No quantitative performance data provided",
        "Lack of independent verification"
    ],
    "open_questions": [
        "How is the nodal excitation achieved and maintained?",
        "What is the actual conversion efficiency?",
        "Does the device violate conservation of energy?"
    ],
    "red_flags": [
        "Free-energy claim without supporting data",
        "Absence of peer-reviewed experimental results"
    ],
    "evidence_quotes": [
        "\"A torsion pendulum excited at the nodal point. Power is taken from the end in motion...\""
    ]
}