## Episode 505: Preparation for wave-particle duality topic

Teaching Guidance for 16-19

As with quantum theory, this is a section of the course that candidates will find completely new.

#### Main aims of this topic

Students will:

- understand that electron diffraction is evidence for wave-like behaviour
- use the de Broglie equation
- identify situations in which a wave model is appropriate, and in which a particle model is appropriate, for explaining phenomena involving light and electrons
- use a standing wave model for electrons in an atom

#### Prior knowledge

Students should have an understanding of wave phenomena, including diffraction and interference. They should know how to calculate momentum.

This work follows on from a study of the photoelectric effect.

#### Where this leads

These episodes merely skim the surface of quantum physics. For students who wish to learn a little more, here is some suggested reading:

- The New Quantum Universe; Tony Hey and Patrick Walters; CUP
- Quantum Physics: An Introduction; J Manners; IOPP

You can extend the idea of electrons-as-waves further, to the realm of the atom.