Cathode rays (A-level only)
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Discharge tube basics

Discharge tube basics

Labelled discharge tube showing low-pressure gas, cathode, anode, electrons moving to the anode and positive ions moving to the cathode A cathode ray is a beam of fast-moving electrons emitted from the cathode of a low-pressure gas tube. Those electrons move from the negative cathode toward the positive anode.

Cathode rays (A-level only) Lesson

  1. A Level
  2. /Physics
  3. /Cathode rays (A-level only)