Crossword puzzle clue "element in vacuum tube filaments"

Here are the possible solutions for element in vacuum tube filaments clue

Answer
Clue
Relevancy
thorium
Clue
Element in vacuum tube filaments
tungsten
Clue
Element used in light bulb filaments
anode
Clue
Vacuum tube part
___ dark space (region in a vacuum tube)
Vacuum tube part.
Definition
a positively charged electrode
anodes
Clue
Vacuum tube terminals
Vacuum tube parts
Definition
ANODE, a positively charged electrode
argo
Clue
Gas in a vacuum tube

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