![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.
![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.
![Roger Bragg à l'extérieur avec un VTT](/sites/default/files/styles/career_image/public/2020-01/roger%20bragg3.jpg?itok=4zW-xnNP)
Roger Bragg
Career Profiles
Construction Electrician
![Photo de Melissa Mathers](/sites/default/files/styles/career_image/public/2019-09/Melissa%20Mathers.png?itok=ubX1ZJn8)
Melissa Valdez
Technical Consultant, Watson AI
![Robin Lee Sheffield | Officier du génie des systèmes de combat naval](/sites/default/files/styles/career_image/public/2019-09/Robin%20Lee%20Sheffield.jpg?itok=vanGNLTT)
Robin Lee Sheffield
Naval Combat Systems Engineering Officer
![Sarah Dallaire | Pilote](/sites/default/files/styles/career_image/public/2019-09/Sara%20Dallaire.jpg?itok=v07R7cjJ)
Sarah Dallaire
Pilot, Snowbird 2 with the Air Demonstration Squadron 431
![Measuring radiation in Chernobyl](/sites/default/files/styles/resource_card_image_360x300_/public/2019-11/measuring_radiation_in_Chernobyl.jpg?itok=wrUYuc2O)
Radiation Effects on the Body
Backgrounders
This backgrounder explains the potential effects of radiation on the human body.
![Louisa Ho | Academic-Industrial Liaison](/sites/default/files/styles/career_image/public/2019-09/Louisa%20Ho.jpg?itok=wpE0_j5a)
Louisa Ho
Academic-Industrial Liaison
![Josephy Reimer | Technicien en systèmes de contrôle](/sites/default/files/styles/career_image/public/2019-09/Joseph%20Reimer.jpg?itok=XP_YWeqo)
Joseph Reimer
Controls Technician
Jeremy Daoust
Manager
Jasraj Chahal
Career Profiles
Control System Engineer
![Brian Alistair Smith | Vice-président et Directeur général à la retraite](/sites/default/files/styles/career_image/public/2019-09/Brian%20Smith.jpg?itok=virKnpAY)
Brian Alistair Smith
Retired Vice President and General Manager
Chelsey Peutert
Agricultural Environmental Engineer
![Blair Hampel | Opérateur - contrôle aérospatial](/sites/default/files/styles/career_image/public/2019-09/Blair%20Hampel.jpg?itok=_xF0oTGa)
Blair Hampel
Aerospace Control Operator