A magnetometer is a device that measures magnetism: the direction, strength, or relative change of a magnetic field at a ...

Electromagnetic induction imaging (EMI) is a well established imaging technique, developed over several decades. It has been widely used to assess cracks in metallic structures and to detect and ...

These days when electronic circuits can be found almost anywhere, there is, some people fear*, a different kind of environmental pollution. They call it electrosmog (the word does not appear in any ...

Atomic sensor: the device is made of spins whose noise is only limited by intrinsic quantum fluctuations. (Courtesy: E Polzik) Researchers at the University of Copenhagen in Denmark have found a way ...