{"query": "EV = log₂(8² / 0.004) ≈ 13.97", "count": 20, "results": [{"id": "card_v_bc1ea7c080be", "title": "EV = log₂(8² / 0.004) ≈ 13.97", "shelf": "photography", "surface": "secular", "snippet": "Verdict: HOLDS.\n• photography.exposure_value: EV = 13.966 (matches claim)\nSealed and independently re-checkable: https://narrowhighway.com/s/8bf5f6ed714e882d46a60b3c72db963572c7ae1bb0c6fac47b2c7bd4a6d", "authority_tier": "engine", "source": "Verified by the engine — photography", "readable": false, "generated": false}, {"id": "card_n_d6d3480c8cf2", "title": "Ultraviolet — the first photons that bite", "shelf": "science", "surface": "secular", "snippet": "Past violet, single photons start doing chemistry. Sealed: the workhorse conversion\nhc = 1239.8 eV·nm (exact since the 2019 SI made h and e definitions, not measurements), and\nthe germicidal UV-C line", "authority_tier": "engine_derived", "source": "Concordance assay — 2026-07-09", "readable": false, "generated": false}, {"id": "card_n_0659d133d839", "title": "The ionizing line — where light becomes radiation", "shelf": "science", "surface": "secular", "snippet": "The spectrum's own boundary, and it is PER-PHOTON, not per-watt. Ionization takes\nroughly 10 eV; sealed: that threshold sits at 123 nm, in the far ultraviolet: https://narrowhighway.com/s/2e10f3cd833c", "authority_tier": "engine_derived", "source": "Concordance assay — 2026-07-09", "readable": false, "generated": false}, {"id": "card_qm_quantization", "title": "Quantization — the quantum of action, light in lumps", "shelf": "codex", "surface": "secular", "snippet": "The quantum is real and discrete: the quantum of action hbar = h/(2 pi) (sealed), energy in quanta E = hf (a green photon, 2.25 eV, sealed), the sharp spectrum of every atom. Where it matters the worl", "authority_tier": "engine_derived", "source": "Narrow Highway — quantum mechanics", "readable": false, "generated": false}, {"id": "card_n_7b9fe7aaa620", "title": "Infrared — everything warm is broadcasting", "shelf": "science", "surface": "secular", "snippet": "Above visible red the spectrum becomes heat's own voice: every body radiates with a\npeak set by Wien's law, λ_peak·T = 2898 µm·K. Sealed: at body temperature (310 K) you glow\nbrightest at 9.3 µm — whi", "authority_tier": "engine_derived", "source": "Concordance assay — 2026-07-09", "readable": false, "generated": false}, {"id": "card_c_521e7d71f8e4", "title": "The ionizing line — where light becomes radi ↔ Ultraviolet — the first photons that bite", "shelf": "connections", "surface": null, "snippet": "Ionization takes roughly 10 eV; sealed: that threshold sits at 123 nm, in the far ultraviolet  — a concord the card itself states; mined + verified.", "authority_tier": "engine_derived", "source": "Concordance miner — 2026-07-11", "readable": false, "generated": false}, {"id": "card_n_b04a994d0276", "title": "X-rays — shadows cast by 12-picometer light", "shelf": "science", "surface": "secular", "snippet": "Sealed: a 100 keV medical X-ray photon has a wavelength of 12.3 pm — smaller than an\natom: https://narrowhighway.com/s/2e10f3cd833c0da8ed1973eeb517c9de779e8956cd7d04eeee423aab280c4455 . That is why X-", "authority_tier": "engine_derived", "source": "Concordance assay — 2026-07-09", "readable": false, "generated": false}, {"id": "card_calc_v_photography_reciprocity_equivalent", "title": "Reciprocity equivalent", "shelf": "calculations", "surface": "secular", "snippet": "Reciprocity equivalent — photography. Formula: equal EV settings equivalent. Canonical FORM: logarithmic (y = k * log(x / x0)) — engine verifier photography.reciprocity_equivalent — the deterministic ", "authority_tier": "reference", "source": "The Calculation Map — every calculation, mapped by form", "readable": false, "generated": false}, {"id": "card_c_08edecc3ea85", "title": "Ultraviolet — the first photons that bite ↔ X-rays — shadows cast by 12-picometer light", "shelf": "connections", "surface": null, "snippet": "the workhorse conversion hc = 1239.8 eV·nm  — a concord the card itself states; mined + verified.", "authority_tier": "engine_derived", "source": "Concordance miner — 2026-07-11", "readable": false, "generated": false}, {"id": "card_c_cfad1088f99b", "title": "Infrared — everything warm is broadcasting ↔ The ionizing line — where light becomes radi", "shelf": "connections", "surface": null, "snippet": "The photon picture is arriving but gentle: an IR photon carries ~0.1 eV, enough to wiggle molecules (heat), far too weak to break them.  — a concord the card itself states; mined + verified.", "authority_tier": "engine_derived", "source": "Concordance miner — 2026-07-11", "readable": false, "generated": false}, {"id": "card_c_f6791070bdc1", "title": "Infrared — everything warm is broadcasting ↔ Ultraviolet — the first photons that bite", "shelf": "connections", "surface": null, "snippet": "The photon picture is arriving but gentle: an IR photon carries ~0.1 eV, enough to wiggle molecules (heat), far too weak to break them.  — a concord the card itself states; mined + verified.", "authority_tier": "engine_derived", "source": "Concordance miner — 2026-07-11", "readable": false, "generated": false}, {"id": "card_cs_sorting_algorithms", "title": "Sorting algorithms — the roll of eighty-six and the bound none can beat", "shelf": "codex", "surface": "secular", "snippet": "To sort is to find the one order among n! - and a comparison answers one two-valued question, so no comparison sort beats log2 n! comparisons (Knuth, TAOCP vol. 3, 5.3.1). Eight items: 8! = 40,320 ord", "authority_tier": "engine_derived", "source": "Narrow Highway — computer science", "readable": false, "generated": false}, {"id": "card_works_exposure", "title": "The exposure value of a camera setting", "shelf": "the-works", "surface": "secular", "snippet": "At f/8 and 1/250 s the exposure value is EV = log₂(N²/t) ≈ 13.97 — the single number that makes a bright beach and a dim room comparable.  Worked & sealed by the engine — EV = log₂(8² / 0.004) ≈ 13.97", "authority_tier": "verified", "source": "The Works — worked & sealed", "readable": false, "generated": false}, {"id": "card_n_da20796077e5", "title": "Agglutination — words as beads on a string", "shelf": "science", "surface": "secular", "snippet": "In agglutinative languages, a word is a sentence: morphemes stack in order, each one\ncrisp and separable, exactly like bases along a DNA strand. Turkish ev (house) -> ev-ler\n(houses) -> ev-ler-im (my ", "authority_tier": "engine_derived", "source": "Concordance assay — 2026-07-09", "readable": false, "generated": false}, {"id": "card_calc_v_photography_exposure_value", "title": "Exposure value", "shelf": "calculations", "surface": "secular", "snippet": "Exposure value — photography. Formula: EV = log2(N^2 / t). Canonical FORM: logarithmic (y = k * log(x / x0)) — engine verifier photography.exposure_value — the deterministic check the concordance runs", "authority_tier": "reference", "source": "The Calculation Map — every calculation, mapped by form", "readable": false, "generated": false}, {"id": "card_c_54cb7691e175", "title": "Easton: Stephen ↔ Easton: Tree of the knowledge of good and ev", "shelf": "connections", "surface": null, "snippet": "Both belong to dictionary · easton_concept_q_t — a structural sibling link restored from 1.0's nesting (re-verified same section live). Connects the map so no card is left orphaned.", "authority_tier": "engine_derived", "source": "1.0 nesting harvest — 2026-07-11", "readable": false, "generated": false}, {"id": "card_c_5012c634c40f", "title": "La Rochefoucauld 490: We often go fr ↔ La Rochefoucauld 102: The head is ev", "shelf": "connections", "surface": null, "snippet": "Both belong to classics · larochefoucauld_maxims — a structural sibling link restored from 1.0's nesting (re-verified same section live). Connects the map so no card is left orphaned.", "authority_tier": "engine_derived", "source": "1.0 nesting harvest — 2026-07-11", "readable": false, "generated": false}, {"id": "card_c_62fc17815c5f", "title": "La Rochefoucauld 102: The head is ev ↔ La Rochefoucauld 073: We may find wo", "shelf": "connections", "surface": null, "snippet": "Both belong to classics · larochefoucauld_maxims — a structural sibling link restored from 1.0's nesting (re-verified same section live). Connects the map so no card is left orphaned.", "authority_tier": "engine_derived", "source": "1.0 nesting harvest — 2026-07-11", "readable": false, "generated": false}, {"id": "card_c_348c9be44d15", "title": "Aurelius, Meditations 8.6: Ev → Aurelius, Meditations 5.26: ", "shelf": "connections", "surface": "secular", "snippet": "Sequential prev in aurelius_meditations.", "authority_tier": "engine_derived", "source": "Sequential ordering within work", "readable": false, "generated": false}, {"id": "card_c_597150ab16f6", "title": "Aurelius, Meditations 1.7: F → Aurelius, Meditations 8.6: Ev", "shelf": "connections", "surface": "secular", "snippet": "Sequential prev in aurelius_meditations.", "authority_tier": "engine_derived", "source": "Sequential ordering within work", "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_bc1ea7c080be"}}, "ends": "a verdict or a card · the trail · a seal · one next step"}}