A team of physicists and engineers at the University of Colorado Boulder has discovered a new way to measure the orientation of magnetic fields using what may be the tiniest compasses around—atoms.

In response to a changing magnetic field, so-called alpha brainwaves, the background “hum” of the brain, quieted in human volunteers, scientists reported yesterday (March 18) in eNeuro. “This is the ...

Human neuroimaging Researchers in Massachusetts are developing a human brain-scale MPI scanner with a mechanically rotated, permanent magnet-based field-free line. (Courtesy: Lawrence Wald) Magnetic ...

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 ...

or specific cartesian components of the magnetic field. Although knowing all three vector components of a field provides more complete information about it, a truly scalar sensor has an advantage ...

Even in the fuzzy, probabilistic world of quantum physics, though, there’s a limit on how small you can go. Both ...

It’s something [mircemk] demonstrates, with an Arduino-powered magnetic field strength meter that uses a UGN 3503U Hall effect device. The circuit is extremely simple, comprising the sensor ...