{"query": "Radio-wave production — the chain leaves the bench", "count": 20, "results": [{"id": "card_n_73d989606f90", "title": "Radio-wave production — the chain leaves the bench", "shelf": "science", "surface": "secular", "snippet": "Drive an antenna with the oscillator and the wave departs at c: λ = c/f — sealed:\nthe 1.591 MHz LC wave is ≈ 188 m long (floor(c·2π·10⁻⁷) = 188): https://narrowhighway.com/s/1ee0d3ed486453eee0967146a5"}, {"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"}, {"id": "card_c_4ac8523fa357", "title": "Radio-wave production instantiates the resonant chain", "shelf": "connections", "surface": null, "snippet": "One component of the sealed Ohm-to-radio chain."}, {"id": "card_c_2bdcd43948f0", "title": "The spectrum walk extends radio-wave production across thirteen octaves", "shelf": "connections", "surface": null, "snippet": "The electronics chain launches the wave; the walk follows it from the cavity to the eye."}, {"id": "card_n_51ecbfa0bb5a", "title": "The radio spectrum — one law from the cavity to the eye", "shelf": "science", "surface": "secular", "snippet": "Walk the dial upward and nothing changes but the number: λ·f = c the whole\nway. Twelve rungs sealed in ONE receipt: https://narrowhighway.com/s/d6211f4efb2518c6de145decf57f27b131a01c24ce7841853f395b7b"}, {"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"}, {"id": "card_c_7430fde5dcf6", "title": "Resistor instantiates the resonant chain", "shelf": "connections", "surface": null, "snippet": "One component of the sealed Ohm-to-radio chain."}, {"id": "card_c_d56e2a3d20a1", "title": "Capacitor instantiates the resonant chain", "shelf": "connections", "surface": null, "snippet": "One component of the sealed Ohm-to-radio chain."}, {"id": "card_c_882f7c1f17c8", "title": "Diode instantiates the resonant chain", "shelf": "connections", "surface": null, "snippet": "One component of the sealed Ohm-to-radio chain."}, {"id": "card_c_83f7813c6c91", "title": "Oscillator instantiates the resonant chain", "shelf": "connections", "surface": null, "snippet": "One component of the sealed Ohm-to-radio chain."}, {"id": "card_c_f9a635d90e86", "title": "Varactor instantiates the resonant chain", "shelf": "connections", "surface": null, "snippet": "One component of the sealed Ohm-to-radio chain."}, {"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."}, {"id": "card_n_716e70d8f1c7", "title": "Easton: Wave offerings", "shelf": "dictionary", "surface": "secular", "snippet": "Parts of peace-offerings were so called, because they were waved by the priests (Ex. 29:24, 26, 27; Lev. 7:20-34; 8:27; 9:21; 10:14, 15, etc.), in token of a solemn special presentation to God. They t"}, {"id": "card_n_a7ae37960cae", "title": "FM broadcast (VHF) — three-meter waves, line of sight", "shelf": "science", "surface": "secular", "snippet": "88–108 MHz; sealed: the 100 MHz wave is 2.99 m, and its quarter-wave whip is 74 cm —\nthe length of a car antenna, derived: https://narrowhighway.com/s/d6211f4efb2518c6de145decf57f27b131a01c24ce7841853"}, {"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."}, {"id": "card_n_8c107f598c19", "title": "Easton: Fig", "shelf": "dictionary", "surface": "secular", "snippet": "First mentioned in Gen. 3:7. The fig-tree is mentioned (Deut. 8:8) as one of the valuable products of Palestine. It was a sign of peace and prosperity (1 Kings 4:25; Micah 4:4; Zech. 3:10). Figs were "}, {"id": "card_n_8a72c32445b3", "title": "Easton: Chain", "shelf": "dictionary", "surface": "secular", "snippet": "(1.) A part of the insignia of office. A chain of gold was placed about Joseph’s neck (Gen. 41:42); and one was promised to Daniel (5:7). It is used as a symbol of sovereignty (Ezek. 16:11). The breas"}, {"id": "card_c_2e1c2ada4a8b", "title": "AM broadcast (medium wave) instantiates the spectrum walk", "shelf": "connections", "surface": null, "snippet": "One band of the sealed spectrum walk."}, {"id": "card_c_fd79e29aa60a", "title": "Chemical signal meets electromagnetic signal", "shelf": "connections", "surface": null, "snippet": "The pheromone and the radio wave are the same abstraction on different carriers."}, {"id": "card_c_9b4f831bc355", "title": "The spectrum walk begins at the Schumann cavity", "shelf": "connections", "surface": null, "snippet": "The first rung: the 7.83 Hz fundamental's 38,287 km wave — the planet-sized bottom of the dial."}]}