Assertion: optical attenuator | /r/CapableOf | use screw
Facets:
value: to adjust this resistive material
type: PURPOSE
value: typically
type: DEGREE
Source sentences:
text: A continuously variable waveguide attenuator typically uses a screw to adjust this resistive material from one side of the waveguide wall to the center; in this case, the resistive material is shaped to yield a linear variation in attenuation.