Video Recorder - The Secret Life of Machines - Video/DVD

Video Recorder - 25 minutes Hunkin opens the lid on a modern VCR. A demo shows how a steel strip can be magnetised. Hunkin uses the metal strip on a bandsaw - magnetises it in parts - then "plays" it back. He demonstrates an early invention - sound stored on moving wire. He shows that a Flight recorder - the black box - uses steel wire. Iron Oxide on sticky tape - experiment. Hunkin atually records sound onto it, and plays it back - like an old tape machine. Demonstrates a concentrated magnetic field. First video recorder - BBC 1956. Demo of how videotape signal is striped onto tape. Reel-to-reel tape becomes cassette tape. Picture and sound degrades with copying. Microchip electronics lead to miniaturisation. Difficulties with programmming video machines - recording a program when you're not at home! Special notes

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	The Secret Life of Machines has been on TV around the world - USA, Australia, UK, Britain.... These award winning television programmes show how machines work. Using analogies, illustrations, working models and extraordinary experiments, Tim Hunkin 'lifts the bonnet' on the machines we take for granted. His enthusiasm for his subject is infectious. Excellent education and technology resources.
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