extremely low frequency

extremely low frequency
noun Date: 1966 a radio frequency in the lowest range of the radio spectrum — see radio frequency table

New Collegiate Dictionary. 2001.

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  • Extremely low frequency — (ELF) is the band of radio frequencies from 3 to 30 Hz. ELF was used by the US Navy and Soviet/Russian Navy to communicate with submerged submarines.ExplanationBecause of the electrical conductivity of salt water, submarines are shielded from… …   Wikipedia

  • Extremely Low Frequency — (kurz ELF, dt. „Niederfrequenzbereich“) bzw. extrem niedrige Frequenz bezeichnet elektromagnetische Felder oder Wellen mit extrem niedrigen Frequenzen von 3 bis 30 Hz (Wellenlänge: 100.000 km bis 10.000 km; nicht zu verwechseln mit …   Deutsch Wikipedia

  • extremely low frequency — noun below 3 kilohertz • Syn: ↑ELF • Hypernyms: ↑radio frequency • Part Holonyms: ↑electromagnetic spectrum * * * Radio. any frequency between 30 and 300 hertz. Abbr.: ELF, elf [ …   Useful english dictionary

  • extremely low frequency — ypač žemas dažnis statusas T sritis radioelektronika atitikmenys: angl. extremely low frequency vok. Tiefstfrequenz, f rus. сверхнизкая частота, f pranc. fréquence ultra basse, f …   Radioelektronikos terminų žodynas

  • Extremely Low Frequency — emission of low frequency electromagnetic radiation from electrical appliances …   English contemporary dictionary

  • extremely low frequency — extreme′ly low′ fre′quency n. elo rtv any radio frequency between 30 and 300 hertz Abbr. : ELF • Etymology: 1965–70 …   From formal English to slang

  • extremely low frequency — Radio. any frequency between 30 and 300 hertz. Abbr.: ELF, elf [1965 70] * * * …   Universalium

  • extremely low frequency — noun any radiofrequency between 3 and 30 hertz. Abbrev.: ELF …   Australian English dictionary

  • extremely low frequency band — ypač žemų dažnių diapazonas statusas T sritis radioelektronika atitikmenys: angl. extra low frequency band; extremely low frequency band vok. Kleinstfrequenzband, n rus. диапазон крайне низких частот, m pranc. fréquences extrêmement basses, f …   Radioelektronikos terminų žodynas

  • extremely low-frequency emission —    Abbreviated ELF. Radiation emitted by a computer monitor and other common electrical appliances. ELF emissions fall into the range of 5 to 2000 hertz and decline with the square of the distance from the source. Emissions are not constant… …   Dictionary of networking

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