Assertion: detector | /r/CapableOf | mount inside a closed waveguide ending
Facets:
value: in a horn antenna
type: LOCATION
value: to collect the microwaves
type: PURPOSE
Source sentences:
text: His detectors consisted of a small galena crystal with a metal point contact pressed against it with a thumbscrew, mounted inside a closed waveguide ending in a horn antenna to collect the microwaves.