What is the volume of sound? Sounds are vibrations that travel through the air. A weak vibration doesn't travel very far. Discover more about volume. All about light Learn how light travels and ...

An animated sequence that illustrates a range of different light sources. The Sun, fire, electric lights and torches are all shown. Darkness is presented as the absence of light and shadows as ...

Light and Sound show at Delhi: The Red Fort in Delhi was the first place in Asia to start the sound and light show. The show at Red Fort is entertaining as it reenacts Delhi’s 5000 year history ...

The new HyperCube-SE is an upgraded version of the HyperCube10 and HyperCube15, with improvements in design and light patterns.