{ "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-12T19:36:31Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 3, "engine": "claude", "enrichment": { "pass": 3, "engine": "claude", "producedAt": "2026-10-06T00:10:00Z", "ingestedAt": "2026-10-05T20:55:03+00:00", "fields": [ "agent_conduct", "ethics", "owners" ] }, "gate": { "passed": true, "version": "1.0", "at": "2026-10-06T19:52:02+00:00", "evidence": [ "completeness 1.00", "sense: Wikidata description", "2 live sources", "review by codex: pass" ] } }, "metaModel": { "id": "THING-Q7777572", "registryId": "vr.tr.theatrical-smoke-and-fog", "name": "theatrical smoke and fog", "version": "0.2.0-wave.3", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.FLW" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q7777572/", "model": { "registry_id": "vr.tr.theatrical-smoke-and-fog", "name": "theatrical smoke and fog", "purpose": "Let an agent explain the kinds of theatrical fog and how each is produced, relay safety guidance on ventilation, fluids, oxygen displacement and fire systems from industry and regulators, and match an effect to a venue.", "definition": "Artificial fog, haze and smoke produced for stage, film, concerts and events by fog machines that vaporise glycol or glycerine and water mixtures, by dry ice or liquid nitrogen for low-lying fog, or by hazers that keep a thin aerosol in the air to reveal light beams, used for atmosphere, concealment and lighting effects.", "what_it_is_for": "Atmosphere, concealment and visible light beams in performance.", "affordances": [ "explain how each kind of fog is produced", "compare fluids and machines by effect", "relay safety and ventilation guidance", "plan an effect for a venue and its fire alarms" ], "distinguishing_features": [ "Made on purpose for visual effect, not a by-product of burning", "Fluid-based fog and haze versus cryogenic low fog", "Hazers aim for a thin uniform aerosol rather than a cloud", "Triggers smoke detectors unless fire systems are managed" ], "appearance": "A white cloud, a low creeping layer, or a barely visible haze that makes light beams appear.", "visual_identification": [ "Fog machine with a fluid tank and heater, or a hazer, or a dry ice or nitrogen fogger", "Low-lying fog from dry ice hugs the floor and dissipates", "Pyrotechnic smoke and combustion smoke are different products with different hazards" ], "physical_properties": [ { "quantity": "fog fluid", "typical_range": "glycol or glycerine with water", "unit": "mixture", "note": "proportions vary by product" }, { "quantity": "dry ice", "typical_range": "about -78", "unit": "degrees C", "note": "sublimation temperature" }, { "quantity": "output", "typical_range": "thousands", "unit": "cubic metres per minute", "note": "large machines; varies widely" } ], "families_and_kinds": [ "glycol fog from heated fluid machines", "haze from hazers for light beams", "low-lying fog from dry ice or liquid nitrogen", "oil-based cracker haze", "chilled fog machines that sink glycol fog" ], "related_models": [ { "relation": "is a kind of", "target": "stage effect", "why": "a category of effect" }, { "relation": "needs", "target": "fog machine", "why": "the device that produces it" }, { "relation": "is confused with", "target": "pyrotechnic smoke", "why": "a combustion product with its own rules" }, { "relation": "is related to", "target": "stage lighting", "why": "haze exists to show light" } ], "identifiers": [], "standards_and_regulation": [ "ANSI E1.5 and E1.23 on theatrical fog and haze, from ESTA", "Occupational exposure guidance from workplace safety agencies", "Venue fire alarm isolation procedures and local fire authority approval" ], "failure_modes_and_hazards": [ "False fire alarms and evacuation", "Oxygen displacement by carbon dioxide or nitrogen at floor level", "Respiratory irritation with poor ventilation or wrong fluids", "Slippery floors from condensed fog fluid" ], "in_scope": [], "out_of_scope": [], "characteristics": [], "agent_conduct": { "may": [ "Explain kinds of stage fog, haze and smoke effects and their uses.", "Remind operators to check venue rules, ventilation and fire alarm arrangements." ], "must_not": [ "Use fog effects where they can trigger fire alarms or hide exits without arrangements in place.", "Fill enclosed or low spaces with dry ice or liquid nitrogen fog where people can be overcome.", "Expose performers or audiences with asthma to haze without warning.", "Recommend homemade fog fluids." ], "requires_human": [ "Approving fog effects in a venue with an audience.", "Isolating smoke detectors during a performance." ] }, "ethics": { "considerations": [ "Low-lying fog can displace air and suffocate people in pits or enclosed spaces.", "Haze can harm people with respiratory conditions." ], "affected_parties": [ "Performers", "Audience members", "Crew" ] }, "owners": { "steward": "The production or venue operator that runs the effect.", "master_systems": [] } }, "sources": [ { "id": "wikidata", "title": "Wikidata item Q7777572: theatrical smoke and fog", "url": "https://www.wikidata.org/wiki/Q7777572", "url_status": "live", "what_it_supports": "identity and sense of the item", "checked_by": "wikidata-api" }, { "id": "wikipedia-en", "title": "Wikipedia: Theatrical smoke and fog", "url": "https://en.wikipedia.org/wiki/Theatrical_smoke_and_fog", "url_status": "live", "what_it_supports": "general description of the item", "checked_by": "wikidata-api sitelink" } ], "structure": { "bundles": [ { "id": "kinds", "name": "Kinds", "description": "What kinds of fog exist.", "rationale": "Effect and hazard follow the method.", "layers": [ { "id": "fluid", "name": "Fluid fog and haze", "description": "Heated fluid machines.", "findings": [ { "id": "fluid-finding", "name": "Fluid fog", "description": "Fluid fog.", "questions": [ { "text": "How do glycol and glycerine machines and hazers produce fog and haze?", "kind": "definition" }, { "text": "Is the desired effect a cloud or a thin haze for light beams?", "kind": "boundary" } ] } ] }, { "id": "cryogenic", "name": "Cryogenic", "description": "Dry ice and nitrogen.", "findings": [ { "id": "cryogenic-finding", "name": "Cryogenic", "description": "Cryogenic.", "questions": [ { "text": "How do dry ice and liquid nitrogen produce low-lying fog?", "kind": "definition" }, { "text": "Is the venue floor level safe from gas accumulation?", "kind": "boundary" } ] } ] } ] }, { "id": "plan", "name": "Plan", "description": "Choosing and running an effect.", "rationale": "Practical planning.", "layers": [ { "id": "choice", "name": "Choice", "description": "Machine and fluid.", "findings": [ { "id": "choice-finding", "name": "Choice", "description": "Choice.", "questions": [ { "text": "Which machine, fluid and output suit the venue size and effect?", "kind": "action" }, { "text": "How is output measured and compared?", "kind": "measurement" } ] } ] }, { "id": "venue", "name": "Venue", "description": "Venue systems.", "findings": [ { "id": "venue-finding", "name": "Venue", "description": "Venue.", "questions": [ { "text": "How are fire alarms, ventilation and the fire authority handled for a fog effect?", "kind": "action" }, { "text": "Who must approve the effect?", "kind": "provenance" } ] } ] } ] }, { "id": "safety", "name": "Safety", "description": "Health and safety.", "rationale": "Fog is safe only within limits.", "layers": [ { "id": "exposure", "name": "Exposure", "description": "Exposure limits.", "findings": [ { "id": "exposure-finding", "name": "Exposure", "description": "Exposure.", "questions": [ { "text": "What exposure guidance do standards and agencies give for performers and crew?", "kind": "provenance" }, { "text": "Which entry fits workplace safety?", "kind": "action" } ] } ] }, { "id": "hazards", "name": "Hazards", "description": "Hazards.", "findings": [ { "id": "hazards-finding", "name": "Hazards", "description": "Hazards.", "questions": [ { "text": "What goes wrong with fog effects, and how is each hazard controlled?", "kind": "provenance" }, { "text": "Is the fog in question a combustion smoke, which belongs elsewhere?", "kind": "boundary" } ] } ] } ] }, { "id": "craft", "name": "Craft", "description": "Design and history.", "rationale": "The effect is an art.", "layers": [ { "id": "design", "name": "Design", "description": "Design with light.", "findings": [ { "id": "design-finding", "name": "Design", "description": "Design.", "questions": [ { "text": "How do designers use haze and fog with lighting and staging?", "kind": "provenance" }, { "text": "Which references are standard?", "kind": "provenance" } ] } ] }, { "id": "history", "name": "History", "description": "History.", "findings": [ { "id": "history-finding", "name": "History", "description": "History.", "questions": [ { "text": "How did stage fog develop from steam and chemical smoke to modern machines?", "kind": "provenance" }, { "text": "Which entry fits pyrotechnics?", "kind": "action" } ] } ] } ] } ] }, "openQuestions": [ "Should fog machines be a separate entry?", "How should exposure guidance be linked?", "How should venue fire procedures be represented?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }