Very low frequency or VLF is the ITU designation for radio frequencies (RF) in the range of 3–30 kHz, corresponding to wavelengths from 100 to 10 km, respectively...

Extremely low frequency (ELF) is the ITU designation for electromagnetic radiation (radio waves) with frequencies from 3 to 30 Hz, and corresponding wavelengths...

Low frequency (LF) is the ITU designation for radio frequencies (RF) in the range of 30–300 kHz. Since its wavelengths range from 10–1 km, respectively...

in the 3–120 Hz frequency range. This track is normally sent to a subwoofer—a loudspeaker designed to reproduce very low frequencies. LFE channels originated...

various types of slow earthquake: low frequency earthquakes (LFE) very low frequency earthquakes (VLF) and deep-low-frequency earthquakes slow slip events...

infrared, microwave, radio waves, and low-frequency radio frequency (very low frequency, extremely low frequency) are all examples of non-ionizing radiation...

frequency or wavelength. The spectrum is divided into separate bands, with different names for the electromagnetic waves within each band. From low to...

during and after a nuclear attack. The system used both very low frequency (VLF), and low frequency (LF) radio bands. SLFCS was used for United States nuclear...

wavelengths bend or reflect very little and travel along the line of sight. Very low frequency (VLF) refers to a frequency range of 30 Hz to 3 kHz which...

Transmitting messages to these submarines is an active area of research. Very low frequency (VLF) radio waves can penetrate seawater just over one hundred feet...