Astrophysics (Index)About

extremely low frequency

(electromagnetic radiation, frequency 3 Hz to 30 Hz)

Extremely low frequency (ELF) radiation is electromagnetic radiation defined by the ITU to be within the frequency range of 3 Hz to 30 Hz. It is considered within the lower-frequency end of the radio spectrum, or beyond, i.e., subradio. It is adjacent to super low frequency (SLF) and tremendously low frequency (TLF).

Further reading:
9993km30Hz124×10-15eVbeginextremely low frequency
99930km3Hz12×10-15eVendextremely low frequency

Referenced by pages:
super low frequency (SLF)
tremendously low frequency (TLF)