tremendously low frequency
(electromagnetic radiation, frequency below 3Hz)
The term tremendously low frequency (TLF) is
sometimes used for electromagnetic radiation with a frequency below 3Hz.
It is generally beyond the typical lower-frequency
limits placed on radio, a range sometimes
It is adjacent to (beyond) extremely low frequency.
| || |
|99930km||3Hz||12×10-15eV||begin||tremendously low frequency|
|inf||0Hz||0eV||end||tremendously low frequency|
extremely low frequency (ELF)