School of Physics Lecture Demonstration Manual

Discharge tubes & Electron beams

Ef-1 The Maltese Cross

Published: Tuesday 14 March 2006

To demonstrate that

 a) cathode rays are emitted from the cathode and travel in straight lines and

 b) cathode rays will not penetrate a thin sheet of metal.

Ef-2 Bending of an Electron Beam

Published: Tuesday 14 March 2006

To demonstrate the force experienced by an electron beam in a magnetic field.

Ef-3 Conduction of Electricity Through Gases

Published: Tuesday 14 March 2006

To demonstrate the phenomena associated with electrical discharge under reduced pressure.

Ef-4 Discharge Tubes

Published: Tuesday 14 March 2006

To demonstrate that elements, molecules and compounds have characteristic spectra.

Ef-5 The Magnetic Mirror

Published: Tuesday 14 March 2006

To demonstrate the motion of charged particles in a non uniform magnetic field.

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