![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.
![Charging a cell phone](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/charging_a_cell_phone.jpg?itok=ugTEHYXD)
What If You Could Charge Your Phone Using Radio Waves?
STEM Explained
Could we use radio waves to charge electrical technologies in the future?
![The Parkes Observatory in New South Wales, Australia](/sites/default/files/styles/resource_card_image_360x300_/public/2019-10/Park_Observatory_NSW_Australia.jpg?itok=K11hu9qK)
The Search for Extraterrestrial Intelligence - and How You Can Help!
STEM Explained
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!
![Water: A Natural Reflector Water: A Natural Reflector](/sites/default/files/styles/resource_card_image_360x300_/public/PM_Water_Reflector.jpg?itok=0C01YEYB)
Reflectors
Picture Collections
7 images of some objects that can reflect light such as mirrors, Mylar balloons and water
![Is a green apple always green?](/sites/default/files/2019-08/is-a-green-apple-always-green.jpg)
Is a green apple always green?
Hands-on Activities
What does light have to do with colour? Observe some colourful fruit under different conditions to learn why we see the colours we see!
![Lighting inside the Destiny Laboratory Module](/sites/default/files/styles/resource_card_image_360x300_/public/2019-12/Lighting_Destiny_Module_Sleep.jpg?itok=0SQn_Sm7)
Light on Earth and on the International Space Station
Backgrounders
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.
![How do I see colour?](/sites/default/files/2019-08/how-do-i-see-colour.jpg)
How do I see colour?
Hands-on Activities
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?
![How do movies move?](/sites/default/files/2019-08/how-do-movies-move.jpg)
How do movies move?
Hands-on Activities
Explore the concept of persistence of vision in this hands on activity.
![Colourful sunglasses](/sites/default/files/styles/resource_card_image_360x300_/public/2021-03/colourful_sunglasses.jpg?itok=mZ_pixQ-)
How Do We See Colour?
STEM Explained
How does the human eye see visible light as colour? And why do some people see more colours than others?
![How can you see underwater?](/sites/default/files/2019-08/how-can-you-see-underwater.jpg)
How can you see underwater?
Hands-on Activities
Explore how we see things through water.
![Image © exdez, iStockPhoto.com](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/Image%2C%2C.jpg?itok=ywUpwGCd)
How Can Your Doctor Use the Data in You?
STEM Explained
Scientists are training artificial intelligence to diagnose injuries using x-rays and other medical imagery of you (and millions of others). What improvements and other changes might this bring to the health care system?
![woman with camera](/sites/default/files/styles/resource_card_image_360x300_/public/2019-10/woman_with_camera.jpg?itok=RPlx-udx)
Eye vs. Camera
STEM Explained
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.
![Will Booth | General Manager, Regional Hose & Hydraulics Will Booth | General Manager, Regional Hose & Hydraulics](/sites/default/files/styles/career_image/public/6750_13.jpg?itok=EzIFUjeF)
Will Booth
Career Profiles
General Manager