| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 1,765,324,403 visitors served. |
|
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
photocathode |
Also found in: Dictionary/thesaurus, Wikipedia | 0.01 sec. |
|
photocathode [¦fōd·ō′kath‚ōd] (electronics) A photosensitive surface that emits electrons when exposed to light or other suitable radiation; used in phototubes, television camera tubes, and other light-sensitive devices. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
|
| ? Mentioned in | ? References in periodicals archive | |
|---|---|---|
In current mode detection, counting statistics appears as the RMS width in the sample distribution, due to the fluctuation in the number of electrons produced at the photocathode of the VPD, as a result of the quasi instantaneous amount of energy deposited in the CsI crystal. The photocathode in the night scope that converts visible light into electrons is sensitive to both visible light and some infrared radiation. Traditional night-vision scopes use image intensifiers and photocathode tubes to convert light into electrons, which are projected on a phosphor screen for viewing. |
| Encyclopedia |
| Free Tools: |
For surfers:
Free toolbar & extensions |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|---|