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 ...

To investigate the reflection of light by a plane mirror.

A U-rod in air transmits a laser beam like an optical fibre. When part of the rod is submerged in an index-matched mineral oil, the laser beam is no longer transmitted to the other end. Without ...

In the tank, from top to bottom, the index of refraction is increasing, as in a mirage from the ground up. Shine the laser pointer horizontally across the top, then horizontally across the middle and ...