{"query": "AM broadcast (medium wave) — where the dial begins", "count": 20, "results": [{"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_124f83f7a6fc", "title": "Radio-wave production — the chain leaves the ↔ AM broadcast (medium wave) — where the dial ", "shelf": "connections", "surface": null, "snippet": "A half-wave dipole\nfor it spans ~94 m — which is why AM stations use towers and crystal radios use long wires.  — a concord the card itself states; mined + verified."}, {"id": "card_src_word_traveling_wave", "title": "traveling wave", "shelf": "dictionary", "surface": "secular", "snippet": "traveling wave: (noun) a wave in which the medium moves in the direction of propagation of the wave — syn: travelling wave"}, {"id": "card_src_word_travelling_wave", "title": "travelling wave", "shelf": "dictionary", "surface": "secular", "snippet": "travelling wave: (noun) a wave in which the medium moves in the direction of propagation of the wave — syn: traveling wave"}, {"id": "card_src_comm_deuteronomy_32_39", "title": "Matthew Henry on Deuteronomy 32:39", "shelf": "commentary", "surface": "secular", "snippet": "On Deuteronomy 32:39 — This conclusion of the song speaks three things:\nI. Glory to God, Deu 32:39. \"See now upon the whole matter, that I, even I, am he. Learn this from the destruction of idolaters,"}, {"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_c_9e441e079649", "title": "FM broadcast (VHF) — three-meter waves, line ↔ AM broadcast (medium wave) — where the dial ", "shelf": "connections", "surface": null, "snippet": "Frequency modulation carries the signal in the wave's TIMING rather than its height, which is why amplitude noise (lightning, ignition) mostly washes out — the static-resistance is structural, not mag"}, {"id": "card_c_2d226e523064", "title": "The radio spectrum — one law from the cavity ↔ AM broadcast (medium wave) — where the dial ", "shelf": "connections", "surface": null, "snippet": "AM's 565 m and 176 m band edges  — a concord the card itself states; mined + verified."}, {"id": "card_c_34905309ba8c", "title": "AM broadcast (medium wave) — where the dial  ↔ The radio spectrum — one law from the cavity", "shelf": "connections", "surface": null, "snippet": "530–1700 kHz; sealed wavelengths 565 m down to 176 m  — a concord the card itself states; mined + verified."}, {"id": "card_c_a62897562cbb", "title": "AM broadcast (medium wave) — where the dial  ↔ Shortwave (HF) — around the world on the ion", "shelf": "connections", "surface": null, "snippet": "at night the D-layer vanishes and signals bounce off the E/F layers for hundreds of miles  — a concord the card itself states; mined + verified."}, {"id": "card_src_word_wave_front", "title": "wave front", "shelf": "dictionary", "surface": "secular", "snippet": "wave front: (noun) all the points just reached by a wave as it propagates · (noun) (physics) an imaginary surface joining all points in space that are reached at the same instant by a wave propagating"}, {"id": "card_src_book_45504", "title": "Where Art Begins — Hume Nisbet", "shelf": "gutenberg", "surface": "secular", "snippet": "Where Art Begins, by Hume Nisbet. Subjects: Art. Read the full text (public domain): https://www.gutenberg.org/ebooks/45504"}, {"id": "card_src_book_1402", "title": "Where the Blue Begins — Christopher Morley", "shelf": "gutenberg", "surface": "secular", "snippet": "Where the Blue Begins, by Christopher Morley. Subjects: Fantasy fiction; Dogs -- Fiction; Didactic fiction. Read the full text (public domain): https://www.gutenberg.org/ebooks/1402"}, {"id": "card_n_9d11f44229d4", "title": "Augustine, Confessions §aug_conf_09_001: O Lord, I am Thy servant; I am Thy servant, and the son of Thy handmaid: Thou...", "shelf": "classics", "surface": "witness", "snippet": "O Lord, I am Thy servant; I am Thy servant, and the son of Thy handmaid: Thou hast broken my bonds in sunder. I will offer to Thee the sacrifice of praise. Let my heart and my tongue praise Thee; yea,"}, {"id": "card_src_book_74701", "title": "Where the West begins — Austin Hall", "shelf": "gutenberg", "surface": "secular", "snippet": "Where the West begins, by Austin Hall. Subjects: Short stories; Western stories; Cowboys -- Fiction; Ranchers -- Fiction; Homestead law -- West (U.S.) -- Fiction. Read the full text (public domain): h"}, {"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_27586fd6114c", "title": "Pirkei Avot §avot_03_17: Rabbi Elazar ben Azariah said: Where there is no Torah, there is no right con...", "shelf": "classics", "surface": "secular", "snippet": "Rabbi Elazar ben Azariah said: Where there is no Torah, there is no right conduct; where there is no right conduct, there is no Torah. Where there is no wisdom, there is no fear of God; where there is"}, {"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_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_2e1c2ada4a8b", "title": "AM broadcast (medium wave) instantiates the spectrum walk", "shelf": "connections", "surface": null, "snippet": "One band of the sealed spectrum walk."}]}