{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.ratio-of-volumes","code":"thing-q1647035","url":"https://ver.cy/models/thing/q1647035/","name":"ratio of volumes","alternateNames":[],"kind":"thing","status":"published","version":"0.2.0-wave.3","language":"en","classifiers":{"family":"Thing Registry","category":"Cross-cutting context","entryKind":"thing","plane":"XCT","domain":["XCT.REL"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A dimensionless quantity obtained by dividing one volume by another, used in geometry to compare solids, in chemistry and engineering for mixtures and concentrations expressed as volume fractions, in physiology for measures such as ventilation ratios, and in packaging and logistics for fill and void ratios.","purpose":"Let an agent identify which ratio of volumes is meant, explain its definition and use in the field, compute it from given volumes, and keep senses separate.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Dimensionless","Sense depends on field","Expressed as ratio, fraction or percentage","Requires the same volume units"],"structure":{"bundles":[{"id":"sense","name":"Sense","description":"Which ratio is meant.","layers":[{"id":"which","name":"Which","description":"Sense and field.","findings":[{"id":"which-finding","name":"Which","description":"Which.","questions":[{"text":"Which ratio of volumes is meant, and what are its numerator and denominator?","kind":"definition"},{"text":"Is the question about a volume ratio or a related quantity?","kind":"boundary"}]}]},{"id":"definition","name":"Definition","description":"Definition per field.","findings":[{"id":"definition-finding","name":"Definition","description":"Definition.","questions":[{"text":"How is the ratio defined in geometry, chemistry, engineering and physiology?","kind":"definition"},{"text":"Which entry fits the field?","kind":"action"}]}]}]},{"id":"compute","name":"Compute","description":"Calculation.","layers":[{"id":"calculation","name":"Calculation","description":"Calculation.","findings":[{"id":"calculation-finding","name":"Calculation","description":"Calculation.","questions":[{"text":"How is the ratio computed, and how are units and conditions handled?","kind":"action"},{"text":"What is the result for the values in question?","kind":"measurement"}]}]},{"id":"uncertainty","name":"Uncertainty","description":"Uncertainty.","findings":[{"id":"uncertainty-finding","name":"Uncertainty","description":"Uncertainty.","questions":[{"text":"How is uncertainty in the ratio derived from the volumes?","kind":"measurement"},{"text":"Which entry fits measurement uncertainty?","kind":"action"}]}]}]},{"id":"use","name":"Use","description":"Uses by field.","layers":[{"id":"engineering","name":"Engineering","description":"Engineering uses.","findings":[{"id":"engineering-finding","name":"Engineering","description":"Engineering.","questions":[{"text":"How are compression, void and fill ratios used?","kind":"provenance"},{"text":"Which entry fits compression ratio?","kind":"action"}]}]},{"id":"science","name":"Science","description":"Scientific uses.","findings":[{"id":"science-finding","name":"Science","description":"Science.","questions":[{"text":"How are volume fractions and physiological ratios used?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]}]},{"id":"learn","name":"Learn","description":"Teaching.","layers":[{"id":"geometry","name":"Geometry","description":"Geometry.","findings":[{"id":"geometry-finding","name":"Geometry","description":"Geometry.","questions":[{"text":"How do volume ratios behave under scaling, and how is that taught?","kind":"provenance"},{"text":"Which entry fits scaling?","kind":"action"}]}]},{"id":"teach","name":"Teach","description":"Teaching.","findings":[{"id":"teach-finding","name":"Teach","description":"Teaching.","questions":[{"text":"Which misconceptions arise with volume ratios?","kind":"provenance"},{"text":"Which entry fits ratios generally?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Compute a ratio of volumes and state which volume is divided by which.","State the temperature and pressure conditions when comparing gas volumes."],"mustNot":["Invert a ratio without saying so.","Compare volumes measured at different conditions as if they were alike.","Mix the senses of the ratio across fields, such as volume fraction and geometric ratio.","Use a volume ratio for dosing medicines or hazardous mixtures without qualified checking."],"requiresHuman":["Mixing ratios for fuels, medicines or chemicals in practice."]},"ethics":{"considerations":["Errors in volume ratios can lead to wrong doses or dangerous mixtures."],"affectedParties":["Patients","Workers mixing substances","Learners"]},"owners":{"steward":"Nobody owns the quantity; whoever reports a ratio answers for its definition.","roles":[],"masterSystems":[]},"relations":[{"target":"Q137974504","type":"parent","note":"registry parent class"},{"target":"ratio of two quantities of the same kind","type":"related","note":"a dimensionless quantity"},{"target":"volume fraction","type":"related","note":"a common form"},{"target":"compression ratio","type":"related","note":"an engineering case"},{"target":"mass ratio","type":"related","note":"a different quantity"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.ratio-of-volumes","Wikidata: Q1647035 (https://www.wikidata.org/wiki/Q1647035)"]},"properties":{"applicability":"not-applicable","items":[]},"recognition":{"applicability":"optional","items":["One volume divided by another","Dimensionless","Volume fraction, mass ratio and density are related but different quantities","Not visible; a pure number or percentage."]},"capabilities":{"applicability":"required","items":["identify the sense in context","compute the ratio from given volumes","explain field-specific uses","relay typical values with sources"]},"hazards":{"applicability":"required","items":["Mixing senses across fields","Inverting the ratio","Comparing volumes at different conditions"]},"interfaces":{"applicability":"required","items":["ISO 80000 conventions for dimensionless quantities","Field-specific standards for volume fractions"]},"context":{"applicability":"required","items":["Comparing volumes in a dimensionless way.","geometric volume ratios of solids","volume fractions in mixtures","compression ratio in engines","void and fill ratios in packaging","physiological volume ratios","scale ratios in models"]}},"sources":[{"title":"Wikidata item Q1647035: ratio of volumes","url":"https://www.wikidata.org/wiki/Q1647035","note":"identity and sense of the item"},{"title":"Wikipedia (de): Volumenverhältnis","url":"https://de.wikipedia.org/wiki/Volumenverh%C3%A4ltnis","note":"general description of the item"}],"openQuestions":["Should compression ratio be a separate entry?","How should field standards be linked?","How should conditions be recorded with ratios?"],"resources":{"spec":"/models/things/publications/thing-q1647035/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q1647035/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T20:49:57Z","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 2026-10-08T19:09:48+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass","interaction.properties":"Plane XCT: no invented physical properties."},"score":1.0}}