Superconductors are a special class of material. If they are cooled below a very low temperature, they lose their electrical resistance and conduct electricity without loss. They are suitable for efficient, extremely low-friction magnetic bearings, for example. Valentin Lux (17) from Meißen has set himself a special application: In a spinning machine, a thread is to be guided through a metal ring that rotates at high speed. The young researcher investigated a variant in which a permanent magnet serves as a metal ring that rotates quickly and almost frictionlessly in the field of a superconducting magnet. He designed a measuring apparatus that records the vibration behavior of the magnetic bearing. The result: the ring remains extremely stable in suspension due to the superconductivity.