Researchers at the University of Konstanz have uncovered a new mechanism of sliding friction: resistance to motion that arises without any mechanical contact, driven purely by collective magnetic ...

For over three centuries, Amontons’ first law has been one of the most reliable principles in physics. Postulated by French physicist Guillaume Amontons in his 1699 treatise De la résistance causée ...

Schematic of two magnetic layers composed of permanent magnets. The magnets in the upper layer are free to rotate, while those in the lower layer are fixed. When the layers move relative to each other ...