{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.wheel","code":"thing-q446","url":"https://ver.cy/models/thing/q446/","name":"wheel","alternateNames":["Ferris wheel","scoop wheel","Shining Flower","La Grande Roue","Chuck Wagon","Pirke Ping","Pixar Pal-A-Round","Hellend scheprad","magic wheel","flywheel","watch rotor","control moment gyroscope"],"kind":"thing","status":"published","version":"0.2.0-wave.2","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.OBJ"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A circular component that rotates on an axle, enabling vehicles to move with reduced friction and machines to transmit motion and force, counted among the simple machines with the axle, and extended to forms such as gear wheels, waterwheels and scoop wheels, flywheels, potter wheels, spinning wheels and observation wheels; the wheel is among the most consequential inventions in human history, first appearing in the fourth millennium BCE.","purpose":"Let an agent explain the wheel as a simple machine and its physics, describe kinds of wheels and their uses, support questions about vehicle wheels and maintenance, and describe the history of the wheel.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Rotation on axle","Simple machine","Many forms","Ancient invention"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"The wheel as a machine.","layers":[{"id":"physics","name":"Physics","description":"Physics of the wheel.","findings":[{"id":"physics-finding","name":"Physics","description":"Physics.","questions":[{"text":"How does the wheel and axle reduce friction and provide mechanical advantage, and what is rolling resistance?","kind":"definition"},{"text":"Which entry fits simple machines?","kind":"action"}]}]},{"id":"kinds","name":"Kinds","description":"Kinds of wheel.","findings":[{"id":"kinds-finding","name":"Kinds","description":"Kinds.","questions":[{"text":"What kinds of wheels exist, from vehicle and gear wheels to waterwheels, flywheels, potter wheels and observation wheels?","kind":"definition"},{"text":"Which entry fits a specific kind?","kind":"action"}]}]}]},{"id":"use","name":"Use","description":"Vehicle wheels.","layers":[{"id":"vehicles","name":"Vehicles","description":"Wheels on vehicles.","findings":[{"id":"vehicles-finding","name":"Vehicles","description":"Vehicles.","questions":[{"text":"How are vehicle wheels and tyres specified, and how are they maintained safely?","kind":"provenance"},{"text":"Which entry fits tyres?","kind":"action"}]}]},{"id":"machinery","name":"Machinery","description":"Wheels in machinery.","findings":[{"id":"machinery-finding","name":"Machinery","description":"Machinery.","questions":[{"text":"How are gear wheels, flywheels and waterwheels used in machines, and which safety rules apply?","kind":"provenance"},{"text":"Which entry fits gears?","kind":"action"}]}]}]},{"id":"culture","name":"Culture","description":"Wheels in culture.","layers":[{"id":"rides","name":"Rides","description":"Observation wheels.","findings":[{"id":"rides-finding","name":"Rides","description":"Observation wheels.","questions":[{"text":"What are Ferris and observation wheels, and how are they regulated for safety?","kind":"provenance"},{"text":"Which entry fits a specific wheel?","kind":"action"}]}]},{"id":"symbol","name":"Symbol","description":"Wheel as symbol.","findings":[{"id":"symbol-finding","name":"Symbol","description":"Symbolism.","questions":[{"text":"How does the wheel appear as a symbol in religions and cultures, with attribution?","kind":"provenance"},{"text":"Is the presentation respectful?","kind":"boundary"}]}]}]},{"id":"learn","name":"Learn","description":"History and teaching.","layers":[{"id":"history","name":"History","description":"History of the wheel.","findings":[{"id":"history-finding","name":"History","description":"History.","questions":[{"text":"When and where was the wheel invented, and how did it spread, according to archaeologists?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]},{"id":"teach","name":"Teach","description":"Teaching.","findings":[{"id":"teach-finding","name":"Teach","description":"Teaching.","questions":[{"text":"How can the wheel be taught in physics and history?","kind":"action"},{"text":"Which misconceptions arise?","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Explain the wheel and axle as a simple machine and the physics of rolling.","Report wear, damage or loose fixings on wheels of equipment it is authorized to inspect.","Describe the kinds of wheels and their uses, from carts to gears and turbines."],"mustNot":["Operate or test a vehicle or machine with a wheel it has found cracked, loose or failing.","Remove guards around rotating wheels or work near them while they turn.","Sign off a wheel as safe without inspecting it.","Fit a wheel or tyre outside the vehicle maker's specification."],"requiresHuman":["Returning a vehicle to service after a wheel or tyre failure.","Overriding a lockout on rotating machinery."]},"ethics":{"considerations":["Wheel failures on vehicles and machines kill and maim people nearby.","Wheels give mobility; wheelchairs and transport matter to people's independence."],"affectedParties":["Drivers and passengers","Machine operators","Wheelchair users"]},"owners":{"steward":"Nobody owns the concept; the keeper of a vehicle or machine answers for its wheels.","roles":[],"masterSystems":[]},"relations":[{"target":"Q186713","type":"parent","note":"registry parent class"},{"target":"simple machine","type":"related","note":"category"},{"target":"tractor","type":"related","note":"vehicles with wheels"},{"target":"cycling","type":"related","note":"wheeled sport"},{"target":"curvature","type":"related","note":"circular geometry"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.wheel","Wikidata: Q446 (https://www.wikidata.org/wiki/Q446)"]},"properties":{"applicability":"required","items":["Outside diameter:  m - Measure across the outer circumference through the rotational center.","Axial width:  m - Measure the wheel's extent parallel to its rotational axis.","Mass:  kg - Measure with a balance and specify whether attached components are included.","Moment of inertia:  kg m^2 - Determine about the rotational axis from the mass distribution or a rotational response measurement."]},"recognition":{"applicability":"required","items":["Rotates on an axle","Reduces friction or transmits motion","A roller has no axle; a pulley is a grooved wheel for ropes","A circular disc or spoked ring rotating on an axle."]},"capabilities":{"applicability":"required","items":["explain physics","describe kinds and uses","support vehicle wheel questions","describe history"]},"hazards":{"applicability":"required","items":["Wheel and tyre failure","Bearing wear","Entrapment in rotating machinery"]},"interfaces":{"applicability":"required","items":["Vehicle wheel and tyre standards","Amusement ride safety standards","Machinery safety directives"]},"context":{"applicability":"required","items":["Rotating circular components.","vehicle wheels","gear and drive wheels","water and scoop wheels","craft wheels such as potter and spinning wheels","observation and Ferris wheels"]}},"sources":[{"title":"Wikidata item Q446: wheel","url":"https://www.wikidata.org/wiki/Q446","note":"identity and sense of the item"},{"title":"Wikipedia: Wheel","url":"https://en.wikipedia.org/wiki/Wheel","note":"general description of the item"}],"openQuestions":["Should each wheel type be a separate entry?","How should vehicle standards be linked?","How should archaeological sources be linked?"],"resources":{"spec":"/models/things/publications/thing-q446/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q446/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T00:36:46Z","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":"filled","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 2026-10-07T10:10:31+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}