electron multiplier
type: Concept
broader: electron tube
narrower: photomultiplier
preferred label: تکثیرکننده الکترون @fa

electron tube
type: Concept
narrower: electron multiplier
preferred label: لامپ الکترونی @fa

photomultiplier
type: Concept
broader: electron multiplier
preferred label: تکثیرکن فوتونی @fa