Astrophysics (Index)About

extremely low frequency

(ELF)
(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 (subradio). It is adjacent to super low frequency (SLF) and tremendously low frequency (TLF).


(EMR,spectrum,band)
Further reading:
http://en.wikipedia.org/wiki/Extremely_low_frequency
WaveLFreqPhoton
Energy
  
9993km30Hz124×10-15eVbeginextremely low frequency
99930km3Hz12×10-15eVendextremely low frequency

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

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