A Virtual Loop Revealed the Magnetic Noise Hiding in Metal
A virtual-current-loop calculation predicts thermal magnetic noise from oddly shaped aluminum parts—and mostly matches what sensitive sensors measure.
magnetic sensing
A Tadpole’s Skin Turns Quantum Spin Into a Visible Clue
Weak magnetic fields altered pigment-cell counts around tadpole eyes, in a light-dependent effect consistent with quantum spin chemistry.
A Salamander Robot Feels Its Way From Solid Ground Into Water
A salamander-inspired robot uses magnetic sensors to detect ground contact and water flow, then switches from walking to swimming.