Liz investigates the origin of language in early humans. Jem looks at regenerative braking as a way of avoiding the wastage of energy caused by conventional frictional brakes on a car. ... See full summary »

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Cast

Episode cast overview:
Liz Bonnin ...
Herself
Dallas Campbell ...
Himself
Jem Stansfield ...
Himself - Head of Engineering
Yan Wong ...
Himself (as Dr Yan Wong)
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Storyline

Liz investigates the origin of language in early humans. Jem looks at regenerative braking as a way of avoiding the wastage of energy caused by conventional frictional brakes on a car. Dallas meets Dame Ellen MacArthur and endures a storm during a yacht race round the Isle of Wight, in order to look at prediction of weather. Jem uses a Wimshurst machine to demonstrate lightning and the St Elmo's fire coronal discharge that indicates that it is imminent. Dr Yan demonstrates the stroboscopic effect that causes wagon wheels to appear to run backwards in cinema and TV films. Written by Anonymous

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Release Date:

14 September 2009 (UK)  »

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