Assertion: cathode | /r/HasProperty | same metal
Facets:
value: in electronic vacuum system
type: LOCATION
value: in a vacuum tube
type: LOCATION
Source sentences:
text: Works great, is free and does not deteriorate very fast (so long as both anode and cathode are the same metal).
text: The cathode is a metal oxide and the anode consists of porous carbon.
text: In a vacuum tube or electronic vacuum system, the cathode is a metal surface which emits free electrons into the evacuated space.
text: A cathode is a metal electrode.