Assertion: low frequency | /r/HasProperty | lf
Facets:
Source sentences:
text: Low Frequency (LF)
text: Extremely Low Frequency (ELF)
text: Low Frequency (LF):
text: Low frequency (LF) is the ITU designation for radio frequencies (RF) in the range of 30–300 kHz.
text: Frequencies immediately below MF are denoted low frequency (LF), while the first band of higher frequencies is known as high frequency (HF).
text: Schumann resonances are the principal background in the part of the electromagnetic spectrum from 3 Hz through 60 Hz, and appear as distinct peaks at extremely low frequencies (ELF) around 7.83 Hz (fundamental), 14.3, 20.8, 27.3 and 33.8 Hz.