Assertion: radio wave's frequency | /r/HasProperty | reflected by the ionosphere
Facets:
value: back to earth
type: TRANSITIVE-OBJECT
Source sentences:
text: Additionally, frequencies in the shortwave bands between approximately 1 and 30 MHz, can be reflected back to Earth by the ionosphere, called skywave or "skip" propagation, thus giving radio transmissions in this range a potentially global reach.