A compilation of clips based on the theme of materials and their uses.
Metals, wood and plastic are shown in different forms and uses for each are highlighted.
A technical officer describes how many different objects he tests and how he tests them.
The fabrics Gore-Tex and tweed are tested for strength, weight and waterproofing.
Parachutists describe the strong and light fabrics their parachutes are made from.
A manufacturer describes the different materials needed to make the different bike parts.