The USS Nautilus was the world's first nuclear-powered submarine. It participated in scientific and military operations ...

Nautilus is now part of the Submarine Force Museum in Groton ... Crew members used a line-of-sight diagram to calculate the range and direction for firing torpedoes. The torpedo firing key ...

A series of short films for primary schools, following presenters Mwaksy Mudenda and Greg Foot as they use demonstrations, experiments and animations to learn about forces and electricity.