Magnetostriction is the property that causes ferromagnetic materials to change shape in a magnetic field. It is the source of the 60-cycle buzz you hear from electrical transformers. Terfenol-D is ...

To the extent that you’re familiar with magnetostriction, you probably know that it’s what makes big transformers hum, or that it’s what tips you off if you happen to walk out of a store ...

Now that’s uncanny. Two days before [Ben Krasnow] of the Applied Science YouTube blog posted this video on anti-theft tags that use magnetostriction, we wrote a blog post about a firm that’s ...