{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.opacity","code":"thing-opacity","url":"https://ver.cy/models/thing/opacity/","name":"opacity","alternateNames":["optical opacity","radiopacity","radio-opacity"],"kind":"thing","status":"published","version":"0.2.0-wave.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"noun.phenomenon","plane":"PHY","domain":["PHY.FLW"],"industry":[],"navPath":"","tags":[],"facets":{"substance":"energy","origin":"natural","agency":"inert","mobility":"not-applicable","scale":"not-applicable","affordances":["observable"]}},"whatItIs":"The property of not permitting the passage of electromagnetic radiation such as light, X-rays or radio waves; the opposite of transparency, quantified by opacity or optical depth, and including radiopacity in medical imaging.","purpose":"Let an agent handle opacity by radiation type, measurement and applications in materials, astronomy and medical imaging.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Blocks radiation","Depends on wavelength","Quantified as optical depth","Used in imaging and astrophysics"],"structure":{"bundles":[{"id":"property","name":"Property","description":"What it is.","layers":[{"id":"wavelength","name":"Wavelength","description":"Radiation type.","findings":[{"id":"wavelength-finding","name":"Wavelength","description":"Wavelength dependence.","questions":[{"text":"Is the material opaque at this wavelength?","kind":"boundary"},{"text":"Why does it depend on wavelength?","kind":"definition"}]}]},{"id":"measure","name":"Measure","description":"Optical density.","findings":[{"id":"measure-finding","name":"Measure","description":"Measurement.","questions":[{"text":"What is its optical density or opacity value?","kind":"measurement"},{"text":"Which method was used?","kind":"provenance"}]}]}]},{"id":"imaging","name":"Imaging","description":"Radiopacity.","layers":[{"id":"radiopaque","name":"Radiopaque","description":"Contrast agents.","findings":[{"id":"radiopaque-finding","name":"Radiopaque","description":"Radiopacity.","questions":[{"text":"Why do bones and contrast agents appear bright on X-rays?","kind":"definition"},{"text":"Which materials are radiopaque?","kind":"definition"}]}]},{"id":"reports","name":"Reports","description":"Findings.","findings":[{"id":"reports-finding","name":"Reports","description":"Imaging reports.","questions":[{"text":"Is the user asking the agent to interpret an opacity on their scan?","kind":"boundary"},{"text":"How should they discuss it with a clinician?","kind":"action"}]}]}]},{"id":"astronomy","name":"Astronomy","description":"Stars and atmospheres.","layers":[{"id":"stars","name":"Stars","description":"Stellar opacity.","findings":[{"id":"stars-finding","name":"Stars","description":"Stellar opacity.","questions":[{"text":"How does opacity affect energy transport in stars?","kind":"definition"},{"text":"Which sources explain it?","kind":"provenance"}]}]},{"id":"atmosphere","name":"Atmosphere","description":"Windows.","findings":[{"id":"atmosphere-finding","name":"Atmosphere","description":"Atmospheric opacity.","questions":[{"text":"Which wavelengths does Earth atmosphere block?","kind":"definition"},{"text":"Why do some telescopes go to space?","kind":"definition"}]}]}]},{"id":"design","name":"Design","description":"Materials and graphics.","layers":[{"id":"materials","name":"Materials","description":"Paper and films.","findings":[{"id":"materials-finding","name":"Materials","description":"Material opacity.","questions":[{"text":"How opaque is this paper or film, and how is it measured?","kind":"measurement"},{"text":"Which standard applies?","kind":"provenance"}]}]},{"id":"graphics","name":"Graphics","description":"Alpha.","findings":[{"id":"graphics-finding","name":"Graphics","description":"Graphics opacity.","questions":[{"text":"Is opacity in design software meant?","kind":"boundary"},{"text":"Which entry fits?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Explain opacity and optical depth for light, X-rays and radio waves.","Report measured opacity of materials, smoke or the atmosphere with its method."],"mustNot":["Use opacity measurements to misrepresent emissions or air quality.","Claim a material shields people from radiation when its opacity at that wavelength is not established.","Use radiopacity to conceal items from lawful security screening."],"requiresHuman":["Approving shielding or protective materials for medical or radiation work."]},"ethics":{"considerations":["Shielding decisions affect the radiation dose that workers and patients receive.","Smoke opacity readings enforce air quality rules that protect health."],"affectedParties":["Radiation workers and patients","People breathing polluted air","Researchers"]},"owners":{"steward":"Nobody owns a physical property; it is held in common.","roles":[],"masterSystems":[]},"relations":[{"target":"oewn-11439518-n","type":"parent","note":"registry parent class"},{"target":"optical property","type":"related","note":"category"},{"target":"transparency","type":"related","note":"opposite"},{"target":"radiography","type":"related","note":"application"},{"target":"absorption and scattering","type":"related","note":"processes"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.opacity","Open English WordNet: oewn-11510458-n"]},"properties":{"applicability":"not-applicable","items":[]},"recognition":{"applicability":"required","items":["Opaque, translucent, transparent","Radiopaque markers in X-rays","Opacity in design software is a related sense","Materials that block light appear opaque; others appear translucent or transparent."]},"capabilities":{"applicability":"required","items":["explain opacity and transparency","measure optical density","relate radiopacity to imaging","use opacity in design and astronomy"]},"hazards":{"applicability":"required","items":["Confusing opacity with colour","Misreading imaging opacities without clinicians"]},"interfaces":{"applicability":"required","items":["ISO standards for opacity of paper and films","Medical device rules for radiopaque markers"]},"context":{"applicability":"required","items":["Describing how materials block radiation.","optical opacity","radiopacity","stellar and atmospheric opacity","opacity in graphics (alpha)"]}},"sources":[{"title":"Open English WordNet 2024, synset oewn-11510458-n","url":"https://en-word.net/id/oewn-11510458-n","note":"sense and gloss of the concept"},{"title":"Wiktionary: opacity","url":"https://en.wiktionary.org/wiki/opacity","note":"word senses and usage"}],"openQuestions":["Should radiopacity be a separate entry?","How should astronomical opacity be linked?","How should graphics opacity be split off?"],"resources":{"spec":"/models/things/publications/thing-opacity/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-opacity/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T11:14:07Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"not-applicable","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T12:16:27+00:00: completeness 1.00; sense: WordNet gloss; 2 live sources; review by codex: pass","interaction.properties":"Opacity is a radiation-dependent property of a material or medium, rather than a physical thing with its own material properties."},"score":1.0}}