Astrophysics (index)

Extremely Low Frequency

(ELF)
(electromagnetic radiation, frequency 3Hz to 30Hz)

Extremely Low Frequency is Electromagnetic Radiation (EMR) with Wavelength defined by the ITU to be in the range of 3Hz to 30Hz. 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)
http://en.wikipedia.org/wiki/Extremely_low_frequency
WaveLFreqPhoton
Energy
  
9993km30Hz124×10-15eVbeginExtremely Low Frequency
99930km3Hz12×10-15eVendExtremely Low Frequency

Referenced by:
Super Low Frequency (SLF)
Subradio
Tremendously Low Frequency (TLF)

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