Libor Šmejkal has a fondness for the artwork of M. C. Escher, whose work was often inspired by mathematics. One of Šmejkal’s favourite pieces is Horseman, a striking picture that features an elaborate ...
Rare earth magnets play a massive role in the auto industry, and they're found in everything from electric motors to power steering systems. But there is a downside to the dependence on rare earth ...
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