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physical object > artifact > device > instrument > optical device > detector > photoelectric device > photomultiplier

photomultiplier comparison table

Subject	has definition	is a kind of
photoelectric device	Any detector which uses the photoelectric effect to convert photons to electrons.	detector
photomultiplier	A vacuum encapsulated photocathode from which electrons are ejected by the photoelectric effect followed by multiple cathodes from which many additional electrons are emitted in a cascade. When finally collected, the original single electron may have generated a pulse of over one million electrons.	photoelectric device

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