Electromagnetic Spectrum

Learn about how a special type of radar helps monitor and protect Canada’s oceans.

Learn about how the radar works, the history and its many real life applications.

Learn about how and why engineers designed and built some very unique aircraft.

Visible light is only part of what astronomers study. They use different types of telescopes to study the entire electromagnetic spectrum.

Learn about light and its properties.

Rainbows are beautiful examples of optics in nature. We see them thanks to the reflection and refraction of visible light and water.

Learn about the different types of radiation, how they interact with atoms and how they can affect you.

Could we use radio waves to charge electrical technologies in the future?

When astronomers search for extraterrestrial life, they often have to listen for radio waves coming from deep space. If you’re interested, you can help!

This backgrounder explains what light is, how it is measured, and how it affects people on Earth and astronauts on board the International Space Station.