{
    "title": "The Invention of Hans Coler, Relating to an Alleged New Source of Power",
    "inventor_name": "Hans Coler",
    "publication_year": 1946,
    "device_name": "Magnetstromapparat",
    "goal": "Generate electrical energy without a chemical or mechanical source of power.",
    "problem_addressed": "Need for a new, possibly perpetual, source of electrical power.",
    "concept_summary": "Coler's devices consist of permanent magnets wound with copper coils, condensers, and inductive circuits arranged statically. By mechanically adjusting magnet spacing and coil positions, a voltage builds up and can be maintained for extended periods. The claimed underlying principle is an oscillating ferro-magnetic phenomenon (~180 kHz) that transfers energy from a magnetic circuit to an electrical circuit, producing output power far exceeding the input.",
    "detailed_description": null,
    "category": "Overunity & Free Energy Claims",
    "principles": [
        "Oscillating ferro-magnetism",
        "Inductive coupling",
        "Magnet-coil resonance",
        "Mechanical adjustment of magnetic spacing"
    ],
    "scientific_domains": [
        "Physics",
        "Electromagnetism"
    ],
    "mechanisms_of_action": [
        "Magnetic circuit oscillation inducing electrical oscillations",
        "Energy transfer via inductive circuits"
    ],
    "materials": [
        "Permanent magnets",
        "Copper wire",
        "Condensers (capacitors)",
        "Solenoidal coils",
        "Copper plates"
    ],
    "energy_sources": [
        "Dry battery (few watts) for Stromzeuger input"
    ],
    "inputs": [
        "Low-power electrical input (few watts) from a dry battery"
    ],
    "outputs": [
        "Electrical voltage (up to 12 V in Magnetstromapparat)",
        "Electrical power (claimed 6 kW from Stromzeuger)"
    ],
    "claimed_performance": "450 mV sustained for 3 h; 60 mV for 30 min; 12 V maximum; 70 W output observed; 6 kW output claimed from a few watts input.",
    "experimental_evidence": "Measured 450 mV for three hours and 60 mV for half an hour on the Magnetstromapparat; observers reported a 70 W version of the Stromzeuger; a 6 kW version was built in 1937.",
    "replication_status": "Device was built and observed by the British team and by several independent witnesses; no independent, peer-reviewed replication documented.",
    "keywords": [
        "permanent magnets",
        "inductive circuit",
        "free energy",
        "overunity",
        "magnetostatic apparatus",
        "voltage buildup"
    ],
    "related_technologies": [
        "Perpetual motion machines",
        "Magnetohydrodynamics",
        "Resonant inductive power transfer"
    ],
    "controversy_level": "high",
    "confidence_score": 0.6,
    "practicability_score": 0.4,
    "fringe_score": 0.9,
    "evidence_strength": 0.5,
    "risk_score": 0.2,
    "trl_estimate": 3,
    "source_urls": [],
    "organizations": [
        "British Intelligence Objectives Sub-Committee",
        "O.K.M.",
        "Continental Metall A.G."
    ],
    "applications": [
        "Electrical power generation",
        "Portable power devices"
    ],
    "limitations": [
        "No theoretical explanation consistent with accepted physics",
        "Reliance on manual adjustment of magnetic spacing",
        "Lack of reproducible, peer-reviewed data",
        "Potential for fraud or misinterpretation"
    ],
    "open_questions": [
        "What is the precise physical mechanism behind the claimed energy gain?",
        "Can the effect be reliably reproduced by independent laboratories?",
        "Is the output truly free of external energy input?"
    ],
    "red_flags": [
        "Claims of perpetual motion and overunity",
        "Absence of peer-reviewed publications",
        "Historical context of secrecy and limited documentation"
    ],
    "evidence_quotes": [
        "He showed that he could obtain a tension of 450 millivolts for a period of some hours; and in a repetition of the experiment the next day 60 millivolts was recorded for a short period.",
        "The greatest tension obtained was stated to be 12 volts.",
        "He had seen the 70 watt \"Stromzeuger\" working on a number of occasions, and had taken it while working from one room to another.",
        "In 1937 built for the Company a larger version with an output of 6 kilowatts.",
        "The apparatus would appear to be too crude to act as a receiver of broadcast energy, or to operate by induction from the mains (the nearest cable being at least 6 feet away)."
    ]
}