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.
Light and Its Properties
Learn about light and its properties.
Optical Telescopes
Learn about the history of telescopes and the function of refracting and reflecting optical telescopes.
Ultrasonography
Learn about the history, function, uses, benefits and risks of Ultrasonography as a medical imaging technology.
Thermal Imaging
Learn about uses of thermal imaging as a medical imaging technology.
Radiography & X-ray Imaging
Learn about radiography and x-rays as a form of medical imaging technology.
Sound vs. Noise
What is the difference between sound and noise? How do they affect your hearing? And is noise always a bad thing?
How Do We See Colour?
How does the human eye see visible light as colour? And why do some people see more colours than others?
Eye vs. Camera
The human eye lets us see the world by sending impulses to our nervous system. In many ways, it is very similar to other optical devices, including cameras.
Who Created the Electronic Synthesizer?
A Canadian researcher built the first voltage-controlled synthesizer in the 1940s.
What is white light?
Find out what happens if you spin the colours of the rainbow in this hands-on activity.
Why is everything so small down there?
Explore how we see things far and near and from different angles. It's all about perspective!