photomultiplier(redirected from Photo-multiplier tube)
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An electronic sensing device used to detect weak electromagnetic radiation, typically light, and amplify its energy via the photoelectric effect.
(General Physics) a device sensitive to electromagnetic radiation, consisting of a photocathode, from which electrons are released by incident photons, and an electron multiplier, which amplifies and produces a detectable pulse of current
pho•to•mul•ti•pli•er(ˌfoʊ təˈmʌl təˌplaɪ ər)
a light detector that amplifies a photon's signal by using a photocathode and a series of electrodes to create a cascade of electrons.