Half-thickness is a useful and accessible introduction to constant fractional decay. Somehow adding extra slices of thickness...

Classroom Activity 14-16

This is a set of three linked activities designed to show how radioactive decay can be modelled. In each case you can discuss...

Classroom Activity 14-16

The diagnostic questions can be used for two main purposes: to encourage students to talk and think through the sources and...

Diagnostic Questions 14-16

It is quite common to see statements along the lines of alpha particles are more ionising than beta , but this is not actually...

Teaching Guidance 14-16

Positron emission tomography (PET) is a gamma imaging technique that uses radiotracers that emit positrons, the antimatter...

Classroom Activity 14-16