Magnetic sensors quietly underpin everything from smartphone compasses to the stability systems that keep electric vehicles on the road, and the race to make them smaller, faster and more sensitive is ...

Low-frequency magnetic fields can impact electronic devices, inducing unwanted current flows in sensitive paths that can add noise, introduce errors, and otherwise disrupt carefully balanced circuits.

“Magnets, how do they work?” asked Insane Clown Posse, a hip-hop duo, in their 2009 song “Miracles”. A flurry of recent papers suggests physicists did not quite have the full picture either. A new ...