Magnets
Did you know that brakes on some vertical-drop fairground rides operate purely through electromagnetic induction? Richard and Jonny head to the fair to investigate, before visiting a scrapyard to demonstrate the incredible weight-lifting capabilities of a magnet powered by just four torch batteries. The guys then check out the magnetic suspension on a Ferrari and look at the future use of magnets in engine-free high speed, floating trains. But that's not all, Richard finds out all there is to know about diamonds while Jonny tackles a gearbox with his angle grinder. Finally, we visit a chip manufacturer famous for creating the Cheese and Onion flavoured chip.
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