The human body is controlled by electrical impulses in the brain, the heart and nervous system. These electrical signals create tiny magnetic fields, which doctors could use to diagnose various ...

Each beat of your heart or burst of brain activity relies on tiny electrophysiological currents that generate minuscule ripples in the surrounding magnetic field. These field variations provide the ...

Biomagnetism applications A novel magnetic gradiometer can record human brain activity and detect cardiac activity in the presence of external magnetic field disturbance. (Courtesy: ...

The Debye effect could be used hunt submarines using the magnetic signatures of their wakes. Seawater is salty, full of ions of sodium and chlorine. Because those ions have different masses, any nudge ...

A low-power, magnetic sensor about the size of a grain of rice that can detect magnetic field changes as small as 50 picoteslas—a million times weaker than the Earth's magnetic field—has been ...

Scientists at the University of Birmingham have developed a new sensor to measure weak magnetic signals in the brain, which has the potential to increase understanding of connectivity in the brain, ...

New MFxM magnetic proximity switches detect magnetic fields over large distances up to 60 mm. These sensors can be used effectively in applications where the target is located behind a wall of ...

Hall-effect switches and instrumentation-grade sensors have become more commonplace in industrial applications, with a wide range of Hall-effect devices now packaged for designers of products and ...

Researchers have discovered a new method to identify individual lithium-ion batteries (LIBs) using magnetic field measurements. Published in Green Energy and Intelligent Transportation, the study ...

In the laboratory: Taner Esat from Forschungszentrum Jülich. (Courtesy: Forschungszentrum Jülich / Sascha Kreklau) Researchers in Germany and Korea have fabricated a quantum sensor that can detect the ...