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photomultiplier

Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An electronic sensing device used to detect weak electromagnetic radiation, typically light, and amplify its energy via the photoelectric effect.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun physics A device, normally in the form of a tube, that uses a photocathode to convert photons into photoelectrons which are then amplified

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