Bridges are symbolic of all sorts of interpersonal and other connections. But they are also the physical connection between land masses, connecting different parts of a city, people and continents. Sometimes delicate in appearance, ...See moreBridges are symbolic of all sorts of interpersonal and other connections. But they are also the physical connection between land masses, connecting different parts of a city, people and continents. Sometimes delicate in appearance, sometimes mighty, they are structures that have to meet the most stringent requirements. Great Inventions takes a journey through their history, from the simple plank over a stream to the suspension bridge that is over a kilometer long, and explains what aircraft have to do with bridges and how the tensile forces are kept under control. Written by
ZDF
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