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Visible Light

The Jodrell Bank Lovell Telescope located in Cheshire, England

Telescopes and Astronomy

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

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.

compass pointing north

How can I tell which way is north at night?

Do you like to look at the stars? What can you identify in the night sky? Try finding some important constellations tonight!

Casting hot iron

What Causes Hot Things to Glow?

Getting electrons excited by heat can cause certain materials to give off visible light when heated - like filaments in light bulbs.

Abstract light pattern

Light and Its Properties

Learn about light and its properties.

Colourful sunglasses

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?

woman with camera

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.

How do I see colour?

How do I see colour?

How is light connected to the colours we see? In this STEAM activity make a colourful light catcher and discover why we see different colours?

A pot of gold at the end of a rainbow

What's in a Rainbow?

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

What are the Different Types of Radiation?

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

Water: A Natural Reflector


7 images of some objects that can reflect light such as mirrors, Mylar balloons and water

Lighting inside the Destiny Laboratory Module

Light on Earth and on the International Space Station

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.

Maya Bankovic | Cinéaste

Maya Bankovic


Maya Bankovic is a Cinematographer in Toronto, Ontario.
Rachel Gardiner | Optométriste

Rachel Gardiner


Rachel Gardiner is an Optometrist located in Newfoundland.