Assertion: detector | /r/CapableOf | use crystal
Facets:
Source sentences:
text: Pickard went on to produce other detectors using the crystals he had discovered; the more popular being the iron pyrite "Pyron" detector and the zincite–chalcopyrite crystal-to-crystal "Perikon" detector in 1908, which stood for "PERfect pIcKard cONtact".