electron beam

Noun
  1. A group of nearly parallel lines of electromagnetic radiation (synset 111448493)
    is a type of: electromagnetic radiation, electromagnetic wave, nonparticulate radiation - radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
    subtypes:
    • cathode ray - a beam of electrons emitted by the cathode of an electrical discharge tube
    • particle beam - a collimated flow of particles (atoms or electrons or molecules)
    same as: beam, ray

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