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phototube
pho·to·tube P0269000 (fō′tō-to͞ob′, -tyo͞ob′)n. An electron tube with a photosensitive cathode.phototube (ˈfəʊtəʊˌtjuːb) n (Electronics) a type of photocell in which radiation falling on a photocathode causes electrons to flow to an anode and thus produce an electric currentpho•to•tube (ˈfoʊ təˌtub, -ˌtyub)
n. an electron tube with a photosensitive cathode, used like a photocell. [1925–30] Translations
phototube
phototube (foh -toh-tewb) Short for photomultiplier tube. See photomultiplier.phototube[′fōd·ō‚tüb] (electronics) An electron tube containing a photocathode from which electrons are emitted when it is exposed to light or other electromagnetic radiation. Also known as electric eye; light-sensitive tube; photoelectric tube. AcronymsSeePHT |