Assertion: ghz's wavelength | /r/HasProperty | long
Facets:
value: only a foot
type: OTHER
Source sentences:
text: When 900 MHz phones were introduced, antennae were downsized to just 6 inches since the wavelength of their signals was only a foot long.
text: If wavelength of the signal is too long (Frequency is too low) when compared to the cross section of the waveguide, the electromagnetic fields cannot propagate.