The Wicked Witch of the West had only one eye, yet that was as powerful as a telescope, and could see everywhere.
But what is a telescope and how does it help us to see so far into the distance? Explore these websites and videos to find out more.
https://youtu.be/7eLwbil7Ddk
Another optical device that creates amazing patterns is a kaleidoscope.
Try the online Kaleidoscope Painter to see the effect.
Challenge yourself!
Our eyes are amazing and are capable of seeing patterns and shapes hidden in images. Try these Magic Eye puzzles and optical illusions, and share them with friends and family.
You can also look at the Help with Challenges page to come up with your own optical challenge.
