Geometric optics

Build your own refracting telescope using glasses of water as the lenses.

Discover a set of resources to develop background knowledge on the topic of space exploration.

Students will explore the societal impacts of inventions involving light and sound.

Visible light is only part of what astronomers study. They use different types of telescopes to study the entire electromagnetic spectrum.

Learn about telescopes that do their work high in Earth’s atmosphere and in space.

Learn about reflection and refraction and meet Emily Altiere, a PhD student in physics who studies lasers.

Learn about the history of telescopes and the function of refracting and reflecting optical telescopes.

Learn about radio astronomy, a type of astronomy that studies objects in space using radio waves and radio telescopes.

Learn about telescopes, how they work & why they're important to astronomers.

Explore how we see things far and near and from different angles. It's all about perspective!

Ever wondered why we have two eyes (and not one, three or more)? Find how your two eyes work together in this hands-on activity.

Find out what happens if you spin the colours of the rainbow in this hands-on activity.

Rainbows are beautiful examples of optics in nature. We see them thanks to the reflection and refraction of visible light and water.

7 images of some objects that can reflect light such as mirrors, Mylar balloons and water