Optical Telescopes
Learn about the history of telescopes and the function of refracting and reflecting optical telescopes.
Telescopes and Astronomy
Visible light is only part of what astronomers study. They use different types of telescopes to study the entire electromagnetic spectrum.
Light Pollution
Light can be a type of pollution. Learn about the damage it causes to people and living things as well as how you can prevent it.
Reflection and Refraction
Learn about reflection and refraction and meet Emily Altiere, a PhD student in physics who studies lasers.
Ultrasonography
Learn about the history, function, uses, benefits and risks of Ultrasonography as a medical imaging technology.
Radiography & X-ray Imaging
Learn about radiography and x-rays as a form of medical imaging technology.
The Optics of Telescopes
Learn about telescopes, how they work & why they're important to astronomers.
Why is everything so small down there?
Explore how we see things far and near and from different angles. It's all about perspective!
Why do we need two eyes to see?
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.
Who Created the Electronic Synthesizer?
A Canadian researcher built the first voltage-controlled synthesizer in the 1940s.
What's in a Rainbow?
Rainbows are beautiful examples of optics in nature. We see them thanks to the reflection and refraction of visible light and water.
What is white light?
Find out what happens if you spin the colours of the rainbow in this hands-on activity.