Demonstration of Harrier vertical take off jet. Dunsfold, Surrey.
A look at how magnets work.
Interior shots of Apollo XI showing zero gravity during flight to the moon.
Selection of US astronauts and a taste of life without gravity in a test plane.
Diagrams illustrate how items stay buoyant.
A series of diagrams and film clips explain the principles of gravity.
Good funfair scenes from the late 1960s.
American diving stars practise in a hotel pool in Palm Springs, California.
A camera and light show us the movement tracks for different activities in a study of motion.
Scientists demonstrate how a magnet can suspend an object without the two things touching.