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thermionic emission

/ˌθɜːrmiˈɒnɪk ɪˈmɪʃən/

翻译: 热电子发射是指材料(通常是金属)受热后,其内部电子获得足够热能克服逸出功而逸出表面的现象。该效应是真空管和某些电子枪工作的基础。

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phrase

/ˌθɜːrmiˈɒnɪk ɪˈmɪʃən/C1formalscientific
  • zh热电子发射是指材料(通常是金属)受热后,其内部电子获得足够热能克服逸出功而逸出表面的现象。该效应是真空管和某些电子枪工作的基础。

The release of electrons from a heated material, typically a metal, due to thermal energy overcoming the work function. This phenomenon is fundamental to the operation of vacuum tubes and certain types of electron guns.

  1. Electron emission from heated materialC2formal

    The release of electrons from a material (usually a metal) when it is heated to a high temperature, due to the thermal energy overcoming the work function.

    zh热电子发射

    • Thermionic emission is the fundamental principle behind the operation of vacuum tubes.
    • The cathode in a cathode ray tube relies on thermionic emission to produce a stream of electrons.
    • Edison's observation of thermionic emission from a light bulb filament led to the 'Edison effect'.