Atomic magnetometer

An atomic magnetometer is a device that detects magnetic fields using the properties of atoms. When atoms like rubidium or cesium are exposed to a magnetic field, their electrons' spins align in a specific way. By shining light and measuring how it interacts with these atoms, the magnetometer can determine the strength and direction of the magnetic field very precisely. This technology is highly sensitive and used in applications like medical imaging, geological surveys, and detecting submarines, providing detailed magnetic measurements without the need for large and bulky equipment.