extremely low frequency


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extremely low frequency

n. Abbr. ELF
A radio frequency below 300 hertz.

extremely low frequency

n
(General Physics) a radio frequency or radio-frequency band below 3 kilohertz. Abbreviation: ELF

extreme′ly low′ fre′quency


n.
any radio frequency between 30 and 300 hertz. Abbr.: ELF
[1965–70]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.extremely low frequency - below 3 kilohertz
radio frequency - an electromagnetic wave frequency between audio and infrared
electromagnetic spectrum - the entire frequency range of electromagnetic waves
References in periodicals archive ?
According to the report, Parlave said Alexis held a 'delusional belief' that he was being controlled by extremely low frequency waves.
Francesco Gamberale on the biological and psychological effects of exposing to extremely low frequency electromagnetic fields, he pointed out that; according to the experiences, electric and magnetic fields related to the power transmission lines don't make any physiological or mental disorder [21].
These guidelines are considered obsolete by numerous scientists and medical professionals, since many modern studies show metabolic and genomic damage from radio frequency and extremely low frequency exposures below the level of intensity that heats tissues.
Extremely low frequency electromagnetic fields as effectors of cellular responses in vitro: possible immune cell activation.
Direct measurements of extremely low frequency magnetic fields in the workplace might provide further information.
Overall, extremely low frequency magnetic fields were evaluated as possibly carcinogenic to humans (IIB), based on the statistical association of higher level residential ELF magnetic fields and increased risk for childhood leukaemia.
Extremely low frequency electromagnetic fields resulting from overhead power lines and household appliances have been linked with a slightly increased risk of childhood leukaemia.
Specific programs to be supported under this contract include the Common Submarine Radio Room, Submarine Satellite Communications Program, High Data Rate (HDR) Submarine Antenna, Multi-Function Mast Antenna and the Extremely Low Frequency Program.
ELF stands for Extremely Low Frequency, but there's nothing elfin about that naval operation.
On June 24, Michael Sprong and Bonnier Urfer, two Wisconsin anti-nuclear activists, were arrested for sawing down three wooden antennae poles supporting the US Navy's Extremely Low Frequency antenna system.
Results of the environmental assessment at Concord released by NSW Health showed levels of exposure to ionising radiation, radiofrequency (RF) radiation, extremely low frequency (ELF) magnetic fields, and drinking water contaminants were all below allowable limits.

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