A Comb for Magnetic Waves
Waves in magnets resemble the vibrations of a string: if you pluck a string, it sounds a single note, but with a strong pluck, overtones appear — sounds at multiple frequencies.
The Elasticity Nobody Noticed
A rubber band stretches and snaps back. A steel spring compresses and expands. Elasticity seems like a property of simple things — a piece of metal or a drop of gel. But the authors of this work looked deeper.
They showed that the electron's spin, its own tiny rotation, can also be elastic.