Assertion: radio wave's amplitude | /r/HasProperty | proportional
Facets:
value: from the normal
type: OTHER
value: from frequency
type: OTHER
value: in an am receiver
type: OTHER
Source sentences:
text: In an AM receiver the amplitude of the audio signal from the detector, and the sound volume, is proportional to the amplitude of the radio signal, so fading causes variations in the volume.
text: Remember that the amplitude of a wave is its displacement from the normal, and frequency is how often the wave occurs.