Electron beam

From Glossary of Meteorology



electron beam[edit | edit source]

A stream of electrons confined and focused by a magnetic field.

In a cathode-ray tube (CRT), the electron beam is scanned across the tube's phosphorescent surface, as it is modulated in intensity, to produce a visual image. The beam emanates from the tube's cathode and is the cathode ray.


  1. A collimated source of electromagnetic radiation (e.g., a laser beam).
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