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...changing hands. Incas and their knots How South American Incas kept records by the use of knots. Wooden tallies for buying beer How wholesale beer sales were recorded using notches on wooden tallies. John Napier's mathematical creations John Napier's method of multiplication and logarithms, and how Charles Babbage corrected his calculations. Babbage's engine of precision...

...Industry Research Association analyse and refine engine noise to reduce its effects on the driver. Living With Road Noise The people of Derbyshire village Doveridge describe how noise pollution from the A50 has changed their lives. The Noisiest Roads in Britain The Transport Research Lab use a machine called Triton to measure tyre noise on all kinds of road surfaces ....

...changed the bike and bike design from a simple steel tubed design to the state of the art aerodynamic machines today? Physiology A scientific look at the physiological make up of a top athlete featuring Olympians such as Rebecca Romero and paralympian Sarah Storey. Forces A cyclist has to overcome forces in order to ride quickly, this film tells you all about how these...

...change direction and gain speed. They explain the difference between traditional and cutting edge military technology, and demonstrate what happens in an emergency landing. This material forms part of the course S207 The physical world... The physical world: helicopters An introduction to this album How helicopters fly Marie and Tracey from the Royal Berkshire Ambulance...