A magnetic flow meter relies on Faraday's Law of Induction to measure the flow of a fluid. Magnets outside the pipe create a ...

Theory suggests that measuring fluid flow should be simple. After all, sticking a magnetic paddle wheel into a fluid stream and counting pulses with a reed switch or Hall sensor is pretty ...

This splitting can be used to polarize an electric current, as one spin state will flow ... switch inside materials—one that lets us toggle spin behavior without ever touching the magnetic ...