Well, science fiction has become a science fact. Scientists have made objects invisible in their labs.
In order to understand how to make something invisible, we have to think about light. Light moves in straight lines. When it hits a surface, it bounces off, and heads for our eyes. And, the brain interprets this bounced light as an image.
If we want to make something invisible, we have to bend light around the object so that our eyes and brains cannot see it. Bending light is an optical illusion. Invisibility is an optical illusion too.
What scientists have done is get some magnifying glasses and put then in a row so that they collect light into a small beam and then bend it. When you look through those lenses, you cannot see anything. So far, they have been able to make something the size of a hand invisible.
As you can imagine, soldiers and spies would love to get their hands on this invention. But, artists would too. With an invisibility cloak, they could bend light so that windows are not needed, but light still comes into the room.
All in all, art continues to inspire science with new ideas. And invisibility cloaks change how we see and don’t see the world.
You can try this invisibility cloak for yourself at the link below. Impress your students and friends.