When you picture a metal detector, you probably imagine a device that has a long shaft with something that looks like a small steering wheel attached to the bottom end. The user walks along the beach, ...

Modern smartphones are packed with a wide range of sensors, and their magnetometer can successfully identify certain kinds of ...

Walk-through metal detectors are common security tools. They use low-frequency electromagnetic fields. These fields interact briefly with metal objects. Health agencies confirm these detectors use non ...

Metal detectors emit sounds to alert you to hidden treasures. Use headphones to be considerate to others and to keep your focus on what you find. Metal detectors emit sounds to alert you to hidden ...