{"query": "FM broadcast (VHF) — three-meter waves, line of sight", "count": 20, "results": [{"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_c_9610a78874eb", "title": "The radio horizon — why towers are tall ↔ FM broadcast (VHF) — three-meter waves, line", "shelf": "connections", "surface": null, "snippet": "Every VHF/FM/TV coverage map is this square root wearing terrain.  — a concord the card itself states; mined + verified."}, {"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_3eab92dc34f4", "title": "The radio spectrum — one law from the cavity ↔ FM broadcast (VHF) — three-meter waves, line", "shelf": "connections", "surface": null, "snippet": "FM's 2.99 m wave and its 74 cm quarter-wave whip  — a concord the card itself states; mined + verified."}, {"id": "card_n_9ab6ee5e792c", "title": "The radio horizon — why towers are tall", "shelf": "science", "surface": "secular", "snippet": "Pure geometry, sealed: from height h the horizon lies at √(2hR) — a 100 m tower\nreaches 35,695 m ≈ 35.7 km: https://narrowhighway.com/s/d6211f4efb2518c6de145decf57f27b131a01c24ce7841853f395b7bc986c323"}, {"id": "card_c_feb938352b59", "title": "FM broadcast (VHF) — three-meter waves, line ↔ The radio spectrum — one law from the cavity", "shelf": "connections", "surface": null, "snippet": "88–108 MHz; sealed: the 100 MHz wave is 2.99 m, and its quarter-wave whip is 74 cm — the length of a car antenna, derived: https://narrowhighway.com/s/d6211f4efb2518c6de145decf57f27b131a01c24ce7841853"}, {"id": "card_src_word_line_of_sight", "title": "line of sight", "shelf": "dictionary", "surface": "secular", "snippet": "line of sight: (noun) an imaginary straight line along which an observer looks — syn: line of vision"}, {"id": "card_survival_signal_rescue", "title": "Signaling for rescue", "shelf": "survival", "surface": "secular", "snippet": "THREE of anything means distress — three fires in a triangle, three whistle blasts, three flashes. By day: signal mirror aimed at aircraft (flash toward the sun's reflection), bright smoke (green boug"}, {"id": "card_src_word_line_of_vision", "title": "line of vision", "shelf": "dictionary", "surface": "secular", "snippet": "line of vision: (noun) an imaginary straight line along which an observer looks — syn: line of sight"}, {"id": "card_c_87b8bc166a36", "title": "FM broadcast (VHF) instantiates the spectrum walk", "shelf": "connections", "surface": null, "snippet": "One band of the sealed spectrum walk."}, {"id": "card_n_2f98a5c4f9d0", "title": "Augustine, Confessions §aug_conf_11_026: What now is clear and plain is, that neither things to come nor past are.", "shelf": "classics", "surface": "witness", "snippet": "What now is clear and plain is, that neither things to come nor past are. Nor is it properly said, \"there be three times, past, present, and to come\": yet perchance it might be properly said, \"there b"}, {"id": "card_src_word_acoustic_delay_line", "title": "acoustic delay line", "shelf": "dictionary", "surface": "secular", "snippet": "acoustic delay line: (noun) a delay line based on the time of propagation of sound waves — syn: sonic delay line"}, {"id": "card_src_word_sonic_delay_line", "title": "sonic delay line", "shelf": "dictionary", "surface": "secular", "snippet": "sonic delay line: (noun) a delay line based on the time of propagation of sound waves — syn: acoustic delay line"}, {"id": "card_src_word_fm", "title": "fm", "shelf": "dictionary", "surface": "secular", "snippet": "fm: (noun) modulation of the frequency of the (radio) carrier wave — syn: frequency modulation · (noun) a radioactive transuranic metallic element produced by bombarding plutonium with neutrons — syn:"}, {"id": "card_src_word_electromagnetic_delay_line", "title": "electromagnetic delay line", "shelf": "dictionary", "surface": "secular", "snippet": "electromagnetic delay line: (noun) a delay line based on the time of propagation of electromagnetic waves"}, {"id": "card_src_oeis_a000711", "title": "A000711 — Number of partitions of n, with three kinds of 1,2,3 and 4 and two kinds of 5,6,7,...", "shelf": "oeis", "surface": "secular", "snippet": "Number of partitions of n, with three kinds of 1,2,3 and 4 and two kinds of 5,6,7,...  First terms: 1, 3, 9, 22, 51, 107, 217, 416, 775, 1393, 2446, 4185, 7028, 11569, 18749, 29908, 47083, 73157, 1123"}, {"id": "card_src_oeis_a000714", "title": "A000714 — Number of partitions of n, with three kinds of 1 and 2 and two kinds of 3,4,5,....", "shelf": "oeis", "surface": "secular", "snippet": "Number of partitions of n, with three kinds of 1 and 2 and two kinds of 3,4,5,....  First terms: 1, 3, 9, 21, 47, 95, 186, 344, 620, 1078, 1835, 3045, 4967, 7947, 12534, 19470, 29879, 45285, 67924, 10"}, {"id": "card_src_oeis_a000715", "title": "A000715 — Number of partitions of n, with three kinds of 1,2 and 3 and two kinds of 4,5,6,....", "shelf": "oeis", "surface": "secular", "snippet": "Number of partitions of n, with three kinds of 1,2 and 3 and two kinds of 4,5,6,....  First terms: 1, 3, 9, 22, 50, 104, 208, 394, 724, 1286, 2229, 3769, 6253, 10176, 16303, 25723, 40055, 61588, 93647"}, {"id": "card_src_oeis_a002597", "title": "A002597 — Number of partitions into one kind of 1's, two kinds of 2's, and three kinds of 3's.", "shelf": "oeis", "surface": "secular", "snippet": "Number of partitions into one kind of 1's, two kinds of 2's, and three kinds of 3's.  First terms: 1, 1, 3, 6, 9, 15, 25, 34, 51, 73, 97, 132, 178, 226, 294, 376, 466, 582, 722, 872, 1062, 1282, 1522,"}, {"id": "card_n_0a8a4924bcf3", "title": "Easton: Taverns, The three", "shelf": "dictionary", "surface": "secular", "snippet": "A place on the great “Appian Way,” about 11 miles from Rome, designed for the reception of travellers, as the name indicates. Here Paul, on his way to Rome, was met by a band of Roman Christians (Acts"}]}