{"query": "η_Carnot = 1 − 300/400 = 0.25", "count": 15, "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", "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)", "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)", "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)", "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)", "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)", "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)", "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)", "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)", "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)", "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)", "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)", "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", "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", "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)", "generated": false}]}