Assertion: radio wave's amplitude | /r/CapableOf | decrease with propagation
Facets:
value: exponentially
type: MANNER
Source sentences:
text: When γ {\displaystyle \gamma } is purely real, the mode is said to be "below cutoff", since the amplitude of the field phasors tends to exponentially decrease with propagation; an imaginary γ {\displaystyle \gamma } , instead, represents modes said to be "in propagation" or "above cutoff", as the complex amplitude of the phasors does not change with z {\displaystyle z} .