Demonstration: Rutherford’s scattering experiment was an ingenious piece of design and interpretation. Whilst it is not...

Practical Activity 14-16

Two methods for demonstrating this to your students. Liquid nitrogen presents a particular set of risks.

Practical Activity 14-16

Demonstration: This introduces students to the idea that the value of a measurement depends on the nature of that measurement.

Practical Activity 14-16

Demonstration: Finding the thickness of an oil film enables an estimate of the size of atoms to be made.

Practical Activity 14-16

Demonstration: This helps students to remember that olive oil molecules stick up out of water like grass on a lawn.

Practical Activity 14-16

Class practical: Experiments to help a class understand the Estimating the size of a molecule using an oil film experiment.

Practical Activity 14-16

Demonstration: Using models to support a discussion of the mean-free-path of molecules in a gas, and, perhaps, to lead to a...

Practical Activity 14-16

Students will have seen signs of electrons and positive ions (perhaps carrying a current through ionized neon or helium). On...

Teaching Guidance 14-16

Hans Geiger was one of Rutherford’s students at Manchester University. He had been trying to make a workable detector to count...

Teaching Guidance 14-16

This is an historic experiment which is often presented to students with little context. It is suggested that, in 1910, the...

Physics Narrative 14-16