Recently, [Solder Hub] put together a brief video that demonstrates the basics of a Hall Effect sensor — in this case, one salvaged from an old CPU fan. Two LEDs, a 100 ohm resistor, and a 3.7 volt ...

The quantum Hall effect, a fundamental effect in quantum mechanics, not only generates an electric but also a magnetic current. It arises from the motion of electrons on an orbit around the nuclei of ...

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On an autumn day in 1879, Edwin Hall was at his bench in Johns Hopkins University's physics lab, a converted kitchen off Baltimore's North Howard Street called the Annex. The third-year graduate ...