![Abstract light pattern](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/abstract_light.jpg?itok=MKGdyhIT)
Light and Its Properties
Backgrounders
Learn about light and its properties.
![Large diamond refracting light](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/big-round-cut-diamond.jpg?itok=KF0PkwqM)
Reflection and Refraction
Backgrounders
Learn about reflection and refraction and meet Emily Altiere, a PhD student in physics who studies lasers.
![Boy looking through telescope at night](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/telescope-boy-night.jpg?itok=13zWe-Od)
Optical Telescopes
Backgrounders
Learn about the history of telescopes and the function of refracting and reflecting optical telescopes.
![Radio Telescope array at night](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/radio-telescope-at-night.jpg?itok=Xj9MDhpb)
Radio Astronomy
Backgrounders
Learn about radio astronomy, a type of astronomy that studies objects in space using radio waves and radio telescopes.
![hermographic image a woman’s head and neck](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/woman_thermographic_image.jpg?itok=a3KKwvMC)
Thermal Imaging
Backgrounders
Learn about uses of thermal imaging as a medical imaging technology.
![dental x-ray](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/dental_x-ray.jpg?itok=wjovCVYk)
Radiography & X-ray Imaging
Backgrounders
Learn about radiography and x-rays as a form of medical imaging technology.
Alicia Rose Rossi
Career Profiles
Forensic Identification Assistant
Jasraj Chahal
Career Profiles
Control System Engineer
![Trevor Roote | Préposé à l'entretien des machines](/sites/default/files/styles/career_image/public/2019-09/Trevor%20Roote.png?itok=gJgsPvJx)
Trevor Roote
Career Profiles
Mechanical Maintainer
![Adult and children looking through telescope](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/adult_and_children_looking_through_telescope.jpg?itok=eKeL_YGd)
The Optics of Telescopes
Backgrounders
Learn about telescopes, how they work & why they're important to astronomers.
![Two faces each with one eye visible](/sites/default/files/2022-06/two%20eyes%20to%20see.jpg)
Why do we need two eyes to see?
Hands-on Activities
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.
![Why is everything so small down there?](/sites/default/files/2019-08/why-is-everything-so-small-down-there.jpg)
Why is everything so small down there?
Hands-on Activities
Explore how we see things far and near and from different angles. It's all about perspective!
![Circle of colours](/sites/default/files/2019-08/what-is-white-light.jpg)
What is white light?
Hands-on Activities
Find out what happens if you spin the colours of the rainbow in this hands-on activity.
![A pot of gold at the end of a rainbow](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/A%20pot%20of%20gold%20at%20the%20end%20of%20a%20rainbow.jpeg?itok=qHjgEPrQ)
What's in a Rainbow?
STEM Explained
Rainbows are beautiful examples of optics in nature. We see them thanks to the reflection and refraction of visible light and water.
![Artist’s interpretation of astronaut in space](/sites/default/files/styles/resource_card_image_360x300_/public/2019-12/Astronaut_in_space.jpg?itok=650F3G6e)
What are the Different Types of Radiation?
Backgrounders
Learn about the different types of radiation, how they interact with atoms and how they can affect you.