very low frequency
(electromagnetic radiation, frequency 3-30 kHz)
Very low frequency (VLF) radiation is defined by the ITU
to be electromagnetic radiation within the frequency range of
3-30 kHz. It is adjacent to ultra low frequency (ULF).
VLF is sometimes classified as a lower-frequency portion of
the radio spectrum,
but definitions of the frequency-range of radio
are not consistent and some would classify VLF as subradio.
| || |
|10km||30kHz||124peV||begin||very low frequency|
|100km||3kHz||12peV||end||very low frequency|
Referenced by pages:
ultra low frequency (ULF)