Science presenter Jon Chase explains the refraction of light. He demonstrates how refraction can make the handle of a Pyrex jug seemingly disappear. He explains this is because when light travels ...

To investigate the reflection of light by different types of surface, and the refraction of light by different substances. Remove the block. Join the crosses to show the paths of the light rays ...

The refractive index of a material defines the angle through which light is bent when it travels between a material and the vacuum. Ordinary materials such as glass have refractive indices between one ...