Properties of the electron

Physicists currently think that the electron is a fundamental particle. As with any particle at this scale, it can only be defined by its properties. Some of these properties can be measured in the school laboratory.

There is enormous benefit to intermediate and advanced students of seeing some of these experiments. They give an authentic experience of some major developments in particle physics and, in the case of electron diffraction, a glimpse into the counter-intuitive and exciting world of quantum objects.

Experiments

• Perrin tube – sign of electron charge
• Measuring e/m
• Preparation for Millikan’s experiment (dancing men)
• A model of Millikan’s experiment
• Millikan's method for money
• Electron diffraction
• Electron diffraction tube
   

Related Guidance

• J J Thomson
• Electron guns
• The speed of electrons
• Deflection in electric fields
• Types of electron tube
• The Millikan experiment
• The Millikan story – a tale of mixed results