Extremely low frequency

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1982 aerial view of the U.S. Navy Clam Lake, Wisconsin ELF transmitter facility, used to communicate with deeply submerged submarines.

Extremely low frequency (ELF) waves are electromagnetic radiation (radio waves) with frequencies from 3 to 300 Hz, and corresponding wavelengths from 100,000 to 1000 kilometers. In atmosphere science, an alternative definition is usually given, from 3 Hz to 3 kHz. In the related magnetosphere science, the lower frequency electromagnetic oscillations (pulsations occurring below ~3 Hz) are considered to lie in the ULF range, which is thus also defined differently from the ITU Radio Bands.

• See also: Wikipedia

• Related: Communication with submarines, Electromagnetic spectrum, Ground dipole, Schumann resonance, Skin effect, TACAMO, Wardenclyffe Tower

Extremely low frequency (ELF) fields Extremely low frequency (ELF) fields www.inchem.org/documents/ehc/ehc/ehc35.htm - Web

NASA live streaming ELF -> VLF Receiver NASA live streaming ELF -> VLF Receiver spaceweather.com/glossary/inspire.html - Web

Longitudinal Electric Waves Longitudinal Electric Waves www.miklagaard.com/longitudinal-electric-waves - Web

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