Spintronics: Ammeter

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Overview Spintronic ammeters indicate the speed of current by the pitch of sound they make. The more current, the higher the pitch. Detailed description The pitch of sound generate d by the spintronic ammeter is directly proportional to the current running around it. A small wedge attached to a diaphragm slides over a bumpy surface. As the wedge moves up and down over the bumps, it generates sound in the diaphragm. Show more