Discharge through Gases (1955)

Film details

  • Country

    United Kingdom

  • Year


  • Type



Experiment explained with animation and diagrams. Shows what happens when two electrodes in a glass tube have a high voltage applied to them. Shows deflection of cathode rays by magnetic or electrostatic fields, ionisation by collision, breadkdown voltage and excitation of the atom by free electrons.

Cast & Credits

Latest from the BFI

  • Latest from the BFI

    Latest news, features and opinion.

More information

Films, TV and people

  • Films, TV and people

    Film lists and highlights from BFI Player.

More information

Sight & Sound magazine

  • Sight & Sound magazine

    Reviews, interviews and features from the international film magazine.

More information

Back to the top