| 单词 |
photomultiplier tube |
| 释义 |
photomultiplier tube
photomultiplier tube[¦fōd·ō′məl·tə‚plī·ər ¦tüb] (electronics) multiplier phototube photomultiplier tubeA vacuum tube that converts light into electrical energy and amplifies it. Photomultiplier tubes are used in high-end drum scanners, because they are more sensitive to light than the CCD elements used in lower-cost devices.photomultiplier tube
pho·to·mul·ti·pli·er tubea detector that amplifies a signal (by as much as 106) of electromagnetic radiation by an acceleration of electrons released from a photocathode through a series of dynodes; as each electron strikes a dynode stage, 3-4 electrons are liberated and accelerated to the subsequent dynode.photomultiplier tube (fō″tō-mŭl′tĭ-plī″ĕr), PMTIn radiography, an electronic vacuum tube designed to convert light photons into electrical pulses. It is used to digitize incoming light photons prior to the creation of computerized images in nuclear medicine and other imaging modalities. AcronymsSeePMTThesaurusSeetube |
| 随便看 |
- cadherin 20, type 2
- cadherin 21
- cadherin-22
- cadherin 22, type 2
- cadherin-23
- cadherin-24
- cadherin 24, type 2
- cadherin-25
- cadherin 26
- cadherin-27
- cadherin 2, n-cadherin
- cadherin 2, type 1, n-cadherin
- cadherin-3
- cadherin 3, p-cadherin
- cadherin 3, type 1, p-cadherin
- cadherin-4
- cadherin 4, type 1, preproprotein
- cadherin 4, type 1, r-cadherin
- cadherin-5
- cadherin 5, type 2
- cadherin 5, type 2, ve-cadherin
- cadherin-6
- cadherin 6, type 2, k-cadherin
- cadherin-7
- cadherin 7, type 2
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