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thermionic emission

/ˌθɜːrmiˈɒnɪk ɪˈmɪʃən/

1 entry

phrase

/ˌθɜːrmiˈɒnɪk ɪˈmɪʃən/C1formalscientific
  • ruВысвобождение электронов из нагретого материала, обычно металла, за счет тепловой энергии, преодолевающей работу выхода. Это явление лежит в основе работы вакуумных ламп и некоторых типов электронных пушек.

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.

    ruТермоэлектронная эмиссия

    • 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'.