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...introduction to this album. The sundial as a mathematical model An ancient mathematical tool to measure the daily and annual cycles of the earth around the sun. Reading the sky with the astrolabe How the Greeks invented a two dimensional astrolabe as a conceptual model of the cosmos, and how it was used. Recording sales in clay tablets Clay tokens, an ancient system used...

...introduction to this album. What are cyborgs? Understanding cyborgs: Dr Manfred Clynes and Prof Kevin Warwick explain the fusion between technology and humanity. Cyclists as cyborgs How Prof Tim Perkins uses cybernetics to create an interface which allows paraplegic people to use their limbs again. Cyborgs have feelings Kevin and Irena Warwick: the ultimate interface -...

...introduction to this album How helicopters fly Marie and Tracey from the Royal Berkshire Ambulance Unit find out how helicopter rotors work. Traditional rotor blades How rotor blades are constructed to cut through the air and keep the helicopter off the ground. Modern rotor blades Large, high speed military helicopters test the limits of aerodynamics. Their rotors use...