What we know about the universe comes from observations which rely on the radiation and (to a lesser degree) particles which...

Lesson 16-19

Changes in wavelength of spectral lines allow us to determine the motion of astronomical objects relative to ourselves.

Lesson 16-19

The universe is expanding; don’t confuse this with the big bang (see episode 705: Cosmology).

Lesson 16-19

Cosmology is the study of the origins, history and future of the universe. The currently favoured model is the big bang.

Lesson 16-19

This episode requires students to apply their knowledge of charged particles and fields.

Lesson 16-19

This episode discusses the idea of particle detectors and how to explain tracks, accompanied by a cloud chamber demonstration.

Lesson 16-19

This episode considers uses of lasers, and the underlying theory of how they work.

Lesson 16-19

Students need to move beyond the idea that nuclear changes are represented solely by alpha, beta and gamma decay. There are...

Lesson 16-19

In this episode, you can look at the different features of the core of a nuclear reactor, and explain its operation using your...

Lesson 16-19

Hundreds of nuclides are known; this episode looks at the pattern of stability using an N-Z plot, and considers the need for...

Lesson 16-19

This episode discusses: mass defect and atomic mass units; and, fission and fusion linked to binding energy. And is...

Lesson 16-19

Protons, neutrons and electrons are familiar particles of matter. However, students are likely to have heard of other...

Lesson 16-19