![Ice technician on a zamboni at an outdoor skating rink](/sites/default/files/styles/resource_card_image_360x300_/public/2020-06/zamboni_outdoor_rink.jpg?itok=nSmM8N5Y)
The Hidden Heroes of Hockey!
STEM Explained
Ice Technicians use math and physics in order to keep the ice ready for hockey.
![The Jodrell Bank Lovell Telescope located in Cheshire, England](/sites/default/files/styles/resource_card_image_360x300_/public/2020-06/Jodrell_Bank_Lovell_Telescope.jpg?itok=TFL_abQu)
Telescopes and Astronomy
Backgrounders
Visible light is only part of what astronomers study. They use different types of telescopes to study the entire electromagnetic spectrum.
![Skyglow from a city and highway](/sites/default/files/styles/resource_card_image_360x300_/public/2020-06/night_sky_and_highway.jpg?itok=5QVvQWHE)
Light Pollution
STEM Explained
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.
![Amy King dans un studio d'enregistrement](/sites/default/files/styles/career_image/public/2020-04/Amy%20King.jpg?itok=gT1IjzDr)
Amy King
Music Producer / Recording Engineer
![Casting hot iron](/sites/default/files/styles/resource_card_image_360x300_/public/2020-04/casting_hot_iron.jpg?itok=mE6eP_bv)
What Causes Hot Things to Glow?
STEM Explained
Getting electrons excited by heat can cause certain materials to give off visible light when heated - like filaments in light bulbs.
![Ketchup bottle and ketchup spill](/sites/default/files/styles/resource_card_image_360x300_/public/2020-03/ketchup_spill.jpg?itok=p-UzhYcC)
Why is ketchup so hard to pour?
STEM Explained
Ever go to pour ketchup on your fries… and nothing comes out? We’ll let the secrets about the viscosity of this non-Newtonian fluid out of the bottle!
![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.
![Close-up of the Arecibo Observatory radio telescope](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/close-up_arecibo-observatory.jpg?itok=CTR21nm6)
SETI - The Search for extraterrestrial Intelligence
Backgrounders
Some astronomers are not looking for stars, planets or galaxies. They are searching for intelligent life in the universe beyond our planet.
![Ultrasound treatment on knee](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/ultrasound_treatment_knee.jpg?itok=093wi43j)
Ultrasonography
Backgrounders
Learn about the history, function, uses, benefits and risks of Ultrasonography as a medical imaging technology.
![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.
![Colour-enhanced MRI of brain and eyes](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/mri-brain_and_eyes.jpg?itok=nvD1FxxQ)
Magnetic Resonance Imaging
Backgrounders
Learn about the history, function, uses, benefits and risks of Magnetic Resonance Imaging (MRI) as a medical imaging technology.