Ever wonder how a mirror works? If you want to find the path that light takes when reflecting off a surface, you could use Fermat's Principle. This states something like this: The path that light ...

Go find a makeup mirror. There's a good chance you have one in the bathroom. You know the type—it has a surface that shows you a zoomed-in image of your face. If you have one nearby, you can use this ...

A research group has devised a new type of mirror that reverses the magnetic field of a light wave upon reflection, rather than its electric field, as regular mirrors do. Seems like a minor difference ...

Mirrors don't actually swap left and right; they reverse front to back. Our brains interpret this as a left-right swap ...

A universal mirror, an object that reflects all light waves back at their source, has been created by scientists in Europe and Asia. Subscribe to read this story ad-free Get unlimited access to ...