Assertion: lamp's electrode | /r/MadeOf | tungsten
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: For low electrode wear the electrodes are usually made of tungsten, which has the highest melting point of any metal, to handle the thermionic emission of electrons.
text: It has a quartz discharge tube with rod-shaped electrodes made of tungsten and a power supply of high voltage DC.