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 ...

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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 ...

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 ...