We’ve even seen the sensors built into a voltmeter ... A contactless probe picks up the changing magnetic field around an unshielded wire with an AC voltage on it. Current doesn’t have ...

The probe tip is typically coated with a thin magnetic layer ... such as magnetic random access memories (MRAM) and magnetic field sensors. MFM imaging provides insights into the magnetic switching ...

But electrical currents also produce magnetic fields, and detecting these fields can offer several advantages over voltage measurements, says Myriam Pannetier-Lecoeur of the French Alternative ...

The average Hackaday reader likely knows, at least in the academic sense, what a magnetic field looks like. But as the gelatinous orbs in our skull can perceive only a tiny fraction of the EM ...

Your own brain also emits tiny pulses of magnetic energy every time a neuron fires. But measuring what direction those fields are pointing, for precise atomic sensors in particular, can get tricky.

Researchers at CU Boulder have created a new type of magnetic field sensor using atoms, offering increased precision.

Graphic depiction of nitrogen-vacancy center sensors (red glowing spheres) used to probe electron motion in a conductor. (Image: JQI) NV centers are atomic-scale defects in diamond that can be used as ...