In a metal like copper, however, the outer electrons swim around freely and are shared by all the atoms. That’s why ...

Tiny deviations: the new metal detector looks for minute disturbances in Earth’s magnetic field. (Courtesy: iStock/muffinmaker) A compact, low-cost and low-power metal detector that can identify the ...

Researchers developed a contact-free system that senses magnetic signals from digital pills, offering a skin-friendly way to ...

A research group from the Graduate School of Engineering at Tohoku University has developed a noninvasive means of detecting ...

Stealth may soon be an impossible feat for submarines, after scientists found a way to detect even the quietest underwater vessels For US submarines operating in waters near China, the era of absolute ...

A three-axis magnetic field sensor from Melexis operates from a 1.8-V power rail shared with other components, such as logic devices. The MLX90392 sensor provides a 1.5-μA power-down mode to maximize ...