As showing how far under favourable conditions the reflection of light from a cloudy sky is visible, I may perhaps be allowed to mention that last night at nine o'clock the reflection of the London ...

Waves close wavesVibrations that transfer energy from place to place without the transference of matter. – including light – can be reflected at the boundary between two different materials.

To investigate the reflection of light by a plane mirror.

Chocolate is a sweet that consists of cocoa butter, sugar and other ingredients. These ingredients determine not only the taste, but also the optical properties of chocolate. This means, how light is ...