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Materials

Heat pump

By Engineering, Physics

It has become cold and the heating season begins. An important technology of the future for this kind of weather is the heat pump. But how does it work? When you inflate a bicycle tire, the pump gets warm in…

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The Sofa Problem

By Mathematics

The question of which sofa you can just push through a hallway that turns at right angles is an unsolved mathematical problem. Fame and glory await the designer of the ideal sofa! Imagine you have a hallway that turns at…

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