{"query": "η_Carnot = 1 − 300/400 = 0.25", "count": 20, "results": [{"id": "card_v_6b5113275e68", "title": "η_Carnot = 1 − 300/400 = 0.25", "shelf": "thermodynamics", "surface": "secular", "snippet": "Verdict: HOLDS.\n• thermodynamics.carnot_efficiency: 1 − 300.0/400.0 = 0.25 (matches claim 0.25)\nSealed and independently re-checkable: https://narrowhighway.com/s/67c732b55196f3c144e182c6e05c21712136f", "authority_tier": "engine", "source": "Verified by the engine — thermodynamics", "readable": false, "generated": false}, {"id": "card_theory_carnot_efficiency", "title": "The Carnot limit (the ceiling on every engine ever built)", "shelf": "theories", "surface": "secular", "snippet": "The Carnot limit (the ceiling on every engine ever built) — an engine domain that can touch it: thermodynamics. Calibration: seals — the efficiency bound computes from two temperatures. No heat engine", "authority_tier": "reference", "source": "The Theory Assay — calibrated, not judged (docs/THEORY_CATALOG.md)", "readable": false, "generated": false}, {"id": "card_theory_third_law_of_thermodynamics", "title": "Third law of thermodynamics", "shelf": "theories", "surface": "secular", "snippet": "Third law of thermodynamics — an engine domain that can touch it: thermodynamics. Calibration: map-only — a limiting statement, not a computation. As temperature approaches absolute zero, the entropy ", "authority_tier": "reference", "source": "The Theory Assay — calibrated, not judged (docs/THEORY_CATALOG.md)", "readable": false, "generated": false}, {"id": "card_theory_second_law_of_thermodynamics", "title": "Second law of thermodynamics (entropy)", "shelf": "theories", "surface": "secular", "snippet": "Second law of thermodynamics (entropy) — an engine domain that can touch it: thermodynamics. Calibration: partial — efficiency and entropy changes compute; the arrow of time is map-only. The entropy o", "authority_tier": "reference", "source": "The Theory Assay — calibrated, not judged (docs/THEORY_CATALOG.md)", "readable": false, "generated": false}, {"id": "card_calc_v_thermodynamics_carnot_efficiency", "title": "Carnot efficiency", "shelf": "calculations", "surface": "secular", "snippet": "Carnot efficiency — thermodynamics. Formula: eta = 1 - Tc/Th. Canonical FORM: fraction (part / whole (dimensionless)) — engine verifier thermodynamics.carnot_efficiency — the deterministic check the c", "authority_tier": "reference", "source": "The Calculation Map — every calculation, mapped by form", "readable": false, "generated": false}, {"id": "card_domchk_thermodynamics_claimed_efficiency", "title": "Thermodynamics: efficiency", "shelf": "thermodynamics", "surface": "secular", "snippet": "A worked check in thermodynamics: efficiency.\n\nGIVEN\n  T_cold_K = 300\n  T_hot_K = 600\n  mass_kg = 1\n  moles = 1\n  temperature_K = 300\n\nCLAIMED\n  claimed_efficiency = 0.5\n\nTHE ENGINE'S VERDICT\n  thermo", "authority_tier": "reference", "source": "The verifier's own documented relation, and a run this engine performed against it (deterministic; re-runnable with tools/domain_goldens.py)", "readable": false, "generated": false}, {"id": "card_n_9c78781d718f", "title": "A parable — Carnot", "shelf": "codex", "surface": "witness", "snippet": "An engineer believed he could build a machine that took less and gave more. He built and rebuilt for many years. The machine he made was very good, but it could never give back more than was given. He", "authority_tier": "operator", "source": "Narrow Highway — original parable", "readable": false, "generated": false}, {"id": "card_works_thermo_carnot", "title": "The Carnot ceiling no engine can beat", "shelf": "the-works", "surface": "secular", "snippet": "Between a hot reservoir at 400 K and a cold one at 300 K, the second law caps efficiency at 1 − T_cold/T_hot = 25%. Not a target — a law.  Worked & sealed by the engine — η = 1 − 300/400 = 0.25.  [HOL", "authority_tier": "verified", "source": "The Works — worked & sealed", "readable": false, "generated": false}, {"id": "card_floor_thermodynamics", "title": "Thermodynamics — the arrow and the one end", "shelf": "codex", "surface": "secular", "snippet": "The four laws. The first law is energy conservation (Noether's energy, now counting heat and work). The second law - entropy never decreases - is the one place physics is not time-reversible: the arro", "authority_tier": "engine_derived", "source": "Narrow Highway — thermodynamics", "readable": false, "generated": false}, {"id": "card_src_word_carnot_s_ideal_cycle", "title": "carnot's ideal cycle", "shelf": "dictionary", "surface": "secular", "snippet": "carnot's ideal cycle: (noun) a cycle (of expansion and compression) of an idealized reversible heat engine that does work without loss of heat — syn: Carnot cycle", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_openstax_university_physics_volume_2_4_5_the_carnot_cycle_c5a4d472", "title": "4.5 The Carnot Cycle — University Physics Volume 2", "shelf": "physics", "surface": "secular", "snippet": "4.5\n\nThe Carnot Cycle\n\nLearning Objectives\n\nDescribe the Carnot cycle with the roles of all four processes involved\n\nOutline the Carnot principle and its implications\n\nDemonstrate the equivalence of t", "authority_tier": "reference", "source": "OpenStax: University Physics Volume 2 (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_f_sica_universitaria_volumen_2_4_5_el_ciclo_de_carnot_db3f05ef", "title": "4.5 El ciclo de Carnot — Física universitaria volumen 2", "shelf": "reference", "surface": "secular", "snippet": "4.5\n\nEl ciclo de Carnot\n\nObjetivos de aprendizaje\n\nDescribir el ciclo de Carnot con las funciones de los cuatro procesos implicados\n\nResumir el principio de Carnot y sus implicaciones\n\nDemostrar la eq", "authority_tier": "reference", "source": "OpenStax: Física universitaria volumen 2 (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_word_carnot", "title": "carnot", "shelf": "dictionary", "surface": "secular", "snippet": "carnot: (noun) French physicist who founded thermodynamics (1796-1832) — syn: Sadi Carnot, Nicolas Leonard Sadi Carnot", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_word_carnot_cycle", "title": "carnot cycle", "shelf": "dictionary", "surface": "secular", "snippet": "carnot cycle: (noun) a cycle (of expansion and compression) of an idealized reversible heat engine that does work without loss of heat — syn: Carnot's ideal cycle", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_word_sadi_carnot", "title": "sadi carnot", "shelf": "dictionary", "surface": "secular", "snippet": "sadi carnot: (noun) French physicist who founded thermodynamics (1796-1832) — syn: Carnot, Nicolas Leonard Sadi Carnot", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_book_78610", "title": "Reflections on the motive power of heat — Sadi Carnot", "shelf": "gutenberg", "surface": "secular", "snippet": "Reflections on the motive power of heat, by Sadi Carnot. Subjects: Thermodynamics. Read the full text (public domain): https://www.gutenberg.org/ebooks/78610", "authority_tier": "reference", "source": "Project Gutenberg (public domain)", "readable": true, "generated": false}, {"id": "card_src_word_nicolas_leonard_sadi_carnot", "title": "nicolas leonard sadi carnot", "shelf": "dictionary", "surface": "secular", "snippet": "nicolas leonard sadi carnot: (noun) French physicist who founded thermodynamics (1796-1832) — syn: Carnot, Sadi Carnot", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "readable": false, "generated": false}, {"id": "card_src_place_7258082", "title": "Carnot-Moon", "shelf": "geography", "surface": "secular", "snippet": "Carnot-Moon: a place in US, PA at 40.519, -80.217, population 11,372. Feature PPL, timezone America/New_York.", "authority_tier": "reference", "source": "GeoNames (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_place_2387495", "title": "Carnot", "shelf": "geography", "surface": "secular", "snippet": "Carnot: a place in CF, 19 at 4.943, 15.877, population 129,032. Feature PPLA, timezone Africa/Bangui.", "authority_tier": "reference", "source": "GeoNames (CC-BY 4.0)", "readable": false, "generated": false}, {"id": "card_src_openstax_f_sica_universitaria_volumen_2_problemas_adicionales_bab9c275", "title": "Problemas Adicionales — Física universitaria volumen 2", "shelf": "reference", "surface": "secular", "snippet": "Problemas Adicionales\n\n67.\n\nUna bomba de calor de 300 W funciona entre el suelo, cuya temperatura es , y el interior de una casa a . ¿Cuál es la cantidad máxima de calor por hora que la bomba de calor", "authority_tier": "reference", "source": "OpenStax: Física universitaria volumen 2 (CC-BY 4.0)", "readable": false, "generated": false}], "house": {"door": "FIND", "kind": "cards", "trail": "results", "seal": null, "next_step": {"do": "open the top card", "door": "FIND", "tool": "card_get", "params": {"id": "card_v_6b5113275e68"}}, "ends": "a verdict or a card · the trail · a seal · one next step"}}