Tag: art

The Speed of Light in Glass

We all know that light bends when it travels through glass, water, or other transparent material – that’s how a microscope, lighthouse and spectacles work! And you might even know that light bends because it travels slower through glass or water than through air – but why does light slow down? And how does it

How to break the speed of light

You may have heard that Einstein’s theory of special relativity imposes a cosmic speed limit: nothing can travel faster than the speed of light. Well, that’s wrong. All that Einstein said was that light moves at the same speed in every reference frame – and while this implies that nothing with real mass can move