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Horizon•Season 11•Episode 29

The Greatest Advance Since the Wheel?

Nov 25, 197460 min
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Sixty years ago a Dutch scientist discovered a phenomenon that overturned the electrical rule book. By cooling certain metals to incredibly low temperatures he found they could continue to carry an electric current for ever, even when the power supply was switched off. Today, developments

Season 11 Episodes33

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Episode Summary

"The Greatest Advance Since the Wheel?" is episode 29 of Horizon season 11. It aired on November 25, 1974.