photomultiplier cell

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• Photomultiplier — tubes (photomultipliers or PMTs for short), members of the class of vacuum tubes, and more specifically phototubes, are extremely sensitive detectors of light in the ultraviolet, visible, and near infrared ranges of the electromagnetic spectrum.… …   Wikipedia

• photomultiplier — [fōt΄ō mul′tə plī΄ər] n. a photoemissive photoelectric cell which amplifies emitted electrons and converts them into brighter light, an electric signal, etc …   English World dictionary

• cell — Synonyms and related words: POW camp, Photronic cell, adytum, animal cell, apartment, ashram, bastille, bioplast, black hole, booth, borstal, borstal institution, box, bridewell, brig, bunch, cabal, cadre, camarilla, cavity, cellular tissue,… …   Moby Thesaurus

• photomultiplier — noun an instrument containing a photoelectric cell and a series of electrodes, used to detect and amplify very faint light …   English new terms dictionary

• Lucas cell — A Lucas cell is a type of scintillation particle detector. It is used to grab a gas sample, filter out the radioactive particulates through a special filter and then count the radioactive decay. It is frequently used to measure radon gas… …   Wikipedia

• Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …   Wikipedia

• spectroscopy — spectroscopist /spek tros keuh pist/, n. /spek tros keuh pee, spek treuh skoh pee/, n. the science that deals with the use of the spectroscope and with spectrum analysis. [1865 70; SPECTRO + SCOPY] * * * Branch of analysis devoted to identifying… …   Universalium

• radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …   Universalium

• Atomic line filter — A potassium Faraday filter designed, built and photographed by Jonas Hedin for making daytime LIDAR measurements at Arecibo Observatory.[1] An atomic line filter (ALF) is an advanced optical band pass filter used in the physical sciences for… …   Wikipedia

• Scanning electron microscope — These pollen grains taken on an SEM show the characteristic depth of field of SEM micrographs …   Wikipedia

• Photodiode — Three Si and one Ge (bottom) photodiodes Symbol for photodiode …   Wikipedia