{
    "title": "Aura Lens -- Cyanogen / dicyanin / pinacolone makes the aura visible",
    "inventor_name": "Walter J. Kilner",
    "publication_year": 1911,
    "device_name": "Aura Lens (Kilner Goggles)",
    "goal": "Enable the naked eye to perceive the human aura (energy field) for diagnostic purposes",
    "problem_addressed": "Inability of conventional vision to detect the purported human energy field (aura)",
    "concept_summary": "Kilner proposed that a human aura emits radiation outside the normal visible spectrum, likely ultraviolet. By training the eye with glass slides or goggles coated with alcoholic solutions of strongly colored dyes such as dicyanin, the observer could become sensitive to this radiation and perceive auric formations surrounding the body.",
    "detailed_description": "The system consists of glass slides (\"Kilner Screens\") or goggles containing a thin film of alcoholic dye solution (e.g., dicyanin, pinacolone, cyanopinacolone). The dyes act as optical filters that block most visible wavelengths while transmitting ultraviolet or near-ultraviolet light. Users first train their eyes by looking through the illuminated slides; after training they claim to be able to see the aura without any apparatus. The method was later adapted with alternative dyes (pinacyanol) or substituted with cobalt-blue/purple glass, but the core principle remained optical filtering to reveal a non-visible radiation field.",
    "category": "Optics & Photonics",
    "principles": [
        "Optical filtering of specific wavelengths",
        "Training of visual perception to detect ultraviolet radiation",
        "Use of colored dye solutions as selective transmission media"
    ],
    "scientific_domains": [
        "Optics",
        "Photonics",
        "Medical diagnostics",
        "Physiology"
    ],
    "mechanisms_of_action": [
        "Dye molecules absorb visible light and transmit UV/near-UV",
        "Human eye adapts to increased UV exposure after training",
        "Perceived aura is interpreted as a pattern of UV-induced visual phenomena"
    ],
    "materials": [
        "Dicyanin (synthetic blue coal-tar dye)",
        "Cyanopinacolone",
        "Pinacolone",
        "Glass slides",
        "Alcohol (ethanol) solvent"
    ],
    "energy_sources": [],
    "inputs": [
        "Ambient or artificial illumination",
        "Human subject (body emitting purported radiation)"
    ],
    "outputs": [
        "Visual perception of aura patterns (inner, outer, etheric double)"
    ],
    "claimed_performance": "Ability to see aura formations extending several inches from the body, including inner and outer aura layers, after a short period of eye-training.",
    "experimental_evidence": "Kilner reported visual observations of auric formations; the British Medical Journal attempted replication and obtained negative results; later researchers dismissed the phenomena as observer artifacts.",
    "replication_status": "Negative replication reported by the British Medical Journal; no independent confirmation.",
    "keywords": [
        "aura",
        "dicyanin",
        "Kilner goggles",
        "optical filter",
        "ultraviolet perception",
        "pseudoscience",
        "medical diagnosis"
    ],
    "related_technologies": [
        "UV photographic sensitizers",
        "Optical filter glasses",
        "Polarizing and wavelength-selective lenses"
    ],
    "controversy_level": "high",
    "confidence_score": 0.9,
    "practicability_score": 0.2,
    "fringe_score": 0.9,
    "evidence_strength": 0.2,
    "risk_score": 0.5,
    "trl_estimate": 2,
    "source_urls": [
        "https://en.wikipedia.org/wiki/Walter_John_Kilner",
        "http://www.sacred-texts.com/eso/tha/index.htm",
        "https://mindmachine.ru/catalog/en/Stalker/",
        "https://hatch.kookscience.com/wiki/Dicyanin_%28synthetic_dye%29",
        "https://www.docdroid.net/QTjMOAb/synthesis-of-dicyanine-a-palkin1923.pdf"
    ],
    "organizations": [
        "St. Thomas Hospital, London",
        "Royal College of Physicians"
    ],
    "applications": [
        "Medical diagnostic aid (auric imaging)",
        "Alternative health assessment"
    ],
    "limitations": [
        "Dyes are scarce, toxic, and hazardous to handle",
        "No reproducible scientific evidence of aura existence",
        "Subjective perception highly dependent on observer bias",
        "Lack of peer-reviewed validation"
    ],
    "open_questions": [
        "Is there a physical, measurable radiation emitted by the human body that corresponds to the reported aura?",
        "Can the human eye be reliably trained to detect ultraviolet radiation without damage?",
        "Do alternative, non-toxic filter materials produce comparable visual effects?"
    ],
    "red_flags": [
        "Pseudoscientific claims lacking independent verification",
        "Use of toxic chemicals (dicyanin, cyanopinacolone)",
        "Historical negative replication attempts"
    ],
    "evidence_quotes": [
        "Kilner reported that after training one could perceive auric formations extending several inches from the body.",
        "The British Medical Journal review concluded that \"Dr. Kilner has failed to convince us that his aura is more real than Macbeth's visionary dagger.\"",
        "A drawback to Kilner's method was the scarcity and toxicity of the chemicals he recommended.",
        "Later researchers dismissed Kilner's findings as artifacts of the observer's own optic process.",
        "The most effective dye dicyanin corresponds to a 90 deg  angle of incidence on the filter surface for aura visualization."
    ]
}