The magnet trick: New invention makes vibrations disappear

https://techxplore.com/news/2024-07-magnet-vibrations.html

"electropermanent magnets maintain magnetism permanently without power supply, but also fitted with coil so that magnetization changed extremely fast using external electric pulse... air suspended platform kept in place by strong magnetic forces... external power also used when big weight  change, when short, strong current pulse is sent through the coil, creating very strong magnetic field for moment changing permanent magnet's magnetization... precise measurements, actively suppress vibrations in mirrors in large telescopes"

Related: Scientists develop new structure to control vibration of machines and instruments
https://techxplore.com/news/2024-09-scientists-vibration-machines-instruments.html