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.

It's a phenomenon called "eye black." Natural skin absorbs some light, but reflects the rest. This reflection can cause glare and impair vision. Black stripes are supposed to prevent this by ...

According to Muskan Jain, brand manager at MARS Cosmetics, this subtle trick works on the principle of light reflection.