{"query": "Diode — the exponential gate", "count": 20, "results": [{"id": "card_n_0fa594da0bff", "title": "Diode — the exponential gate", "shelf": "science", "surface": "secular", "snippet": "The diode's current grows exponentially with voltage; sealed exactly: e^(x+ln2) = 2e^x —\ncurrent DOUBLES for every ln2·nVT of forward voltage, ≈ 17.9 mV at room temperature (sealed:\nfloor(10⁴·ln2·0.02", "authority_tier": "engine_derived", "source": "Concordance assay — 2026-07-09", "generated": false}, {"id": "card_theory_ohm_s_law_circuit_theory", "title": "Ohm's law & circuit theory (Kirchhoff)", "shelf": "theories", "surface": "secular", "snippet": "Ohm's law & circuit theory (Kirchhoff) — an engine domain that can touch it: electrical. Calibration: seals — voltages, currents and power all compute directly. V = IR, plus Kirchhoff's two rules: cur", "authority_tier": "reference", "source": "The Theory Assay — calibrated, not judged (docs/THEORY_CATALOG.md)", "generated": false}, {"id": "card_theory_condensed_matter", "title": "Condensed matter & semiconductors (band theory and the transistor)", "shelf": "theories", "surface": "secular", "snippet": "Condensed matter & semiconductors (band theory and the transistor) — an engine domain that can touch it: materials_science. Calibration: map-only — band gaps and carrier concentrations compute; the fi", "authority_tier": "reference", "source": "The Theory Assay — calibrated, not judged (docs/THEORY_CATALOG.md)", "generated": false}, {"id": "card_src_word_semiconductor_diode", "title": "semiconductor diode", "shelf": "dictionary", "surface": "secular", "snippet": "semiconductor diode: (noun) a semiconductor that consists of a p-n junction — syn: diode, junction rectifier, crystal rectifier", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}, {"id": "card_src_word_diode", "title": "diode", "shelf": "dictionary", "surface": "secular", "snippet": "diode: (noun) a thermionic tube having two electrodes; used as a rectifier — syn: rectifying tube, rectifying valve · (noun) a semiconductor that consists of a p-n junction — syn: semiconductor diode,", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}, {"id": "card_src_word_light_emitting_diode", "title": "light-emitting diode", "shelf": "dictionary", "surface": "secular", "snippet": "light-emitting diode: (noun) diode such that light emitted at a p-n junction is proportional to the bias current; color depends on the material used — syn: LED", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}, {"id": "card_src_word_organic_light_emitting_diode", "title": "organic light-emitting diode", "shelf": "dictionary", "surface": "secular", "snippet": "organic light-emitting diode: (noun) a self-luminous diode (it glows when an electrical field is applied to the electrodes) that does not require backlighting or diffusers — syn: OLED", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}, {"id": "card_src_pron_diodes", "title": "diodes", "shelf": "pronunciation", "surface": "secular", "snippet": "diodes: pronounced (ARPABET) D AY1 OW2 D Z. From the CMU Pronouncing Dictionary — the standard machine-readable pronunciations of North American English.", "authority_tier": "reference", "source": "CMU Pronouncing Dictionary (cmudict) — BSD-2-Clause, Carnegie Mellon", "generated": false}, {"id": "card_c_2ae5fa072760", "title": "Diode — the exponential gate ↔ Electronics — the resonant chain, from Ohm's", "shelf": "connections", "surface": null, "snippet": "That knife-edge nonlinearity is why a diode can rectify — turn a symmetric radio wave into a one-way signal.  — a concord the card itself states; mined + verified.", "authority_tier": "engine_derived", "source": "Concordance miner — 2026-07-11", "generated": false}, {"id": "card_n_cdb747a427d2", "title": "Electronics — the resonant chain, from Ohm's law to the radio wave", "shelf": "science", "surface": "secular", "snippet": "One sealed chain runs the whole bench: Ohm's law (V = I·R), the capacitor's\nexponential clock (one time constant → 63.2% charged), the diode's exponential gate (current\ndoubles every ln2·nVT ≈ 17.9 mV", "authority_tier": "engine_derived", "source": "Concordance assay — 2026-07-09", "generated": false}, {"id": "card_c_547436596e63", "title": "Diode — the exponential gate ↔ Capacitor — the exponential clock (RC time c", "shelf": "connections", "surface": null, "snippet": "The diode's current grows exponentially with voltage; sealed exactly: e^(x+ln2) = 2e^x — current DOUBLES for every ln2·nVT of forward voltage  — a concord the card itself states; mined + verified.", "authority_tier": "engine_derived", "source": "Concordance miner — 2026-07-11", "generated": false}, {"id": "card_src_pron_diode", "title": "diode", "shelf": "pronunciation", "surface": "secular", "snippet": "diode: pronounced (ARPABET) D AY1 OW2 D. From the CMU Pronouncing Dictionary — the standard machine-readable pronunciations of North American English.", "authority_tier": "reference", "source": "CMU Pronouncing Dictionary (cmudict) — BSD-2-Clause, Carnegie Mellon", "generated": false}, {"id": "card_c_49411cccab5a", "title": "Logarithms — multiplication made addition, a ↔ Diode — the exponential gate", "shelf": "connections", "surface": null, "snippet": "the capacitor's RC clock, radioactive decay, compound interest, the diode's curve all rise by multiplying; the logarithm brings them back by adding.  — a concord the card itself states; mined + verifi", "authority_tier": "engine_derived", "source": "Concordance miner — 2026-07-11", "generated": false}, {"id": "card_c_882f7c1f17c8", "title": "Diode instantiates the resonant chain", "shelf": "connections", "surface": null, "snippet": "One component of the sealed Ohm-to-radio chain.", "authority_tier": "engine_derived", "source": "Concordance assay — 2026-07-09", "generated": false}, {"id": "card_c_14c85b907857", "title": "The resonant chain is built by hand as the crystal radio", "shelf": "connections", "surface": null, "snippet": "The keeping's maker card builds this exact chain: antenna, LC tuner, diode detector.", "authority_tier": "engine_derived", "source": "Concordance assay — 2026-07-09", "generated": false}, {"id": "card_n_072d00893a26", "title": "Build a Crystal Radio", "shelf": "maker", "surface": "secular", "snippet": "A working radio with no batteries — runs on the energy of the radio waves themselves. The first DIY electronics project a generation of American kids built.", "authority_tier": "external_aligned", "source": "Popular Science, March 1922 (and many others)", "generated": false}, {"id": "card_n_ba6d9264fa3c", "title": "AM broadcast (medium wave) — where the dial begins", "shelf": "science", "surface": "secular", "snippet": "530–1700 kHz; sealed wavelengths 565 m down to 176 m: https://narrowhighway.com/s/d6211f4efb2518c6de145decf57f27b131a01c24ce7841853f395b7bc986c323 . The waves are so long\nthat the TOWER is the antenna", "authority_tier": "engine_derived", "source": "Concordance assay — 2026-07-09", "generated": false}, {"id": "card_src_word_crystal_rectifier", "title": "crystal rectifier", "shelf": "dictionary", "surface": "secular", "snippet": "crystal rectifier: (noun) a semiconductor that consists of a p-n junction — syn: diode, semiconductor diode, junction rectifier", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}, {"id": "card_src_word_junction_rectifier", "title": "junction rectifier", "shelf": "dictionary", "surface": "secular", "snippet": "junction rectifier: (noun) a semiconductor that consists of a p-n junction — syn: diode, semiconductor diode, crystal rectifier", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}, {"id": "card_src_word_led", "title": "led", "shelf": "dictionary", "surface": "secular", "snippet": "led: (noun) diode such that light emitted at a p-n junction is proportional to the bias current; color depends on the material used — syn: light-emitting diode", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}]}