You can make all sorts of different types of inductors, but the most common type is cylindrical coil of wire---a solenoid. When current runs through the first loop, it creates a magnetic field that ...

Thomas Stace receives funding from the Australian Research Council through a Future Fellowship and the Centre of Excellence in Engineered Quantum Systems. Clemens Mueller receives funding from the ...

Radio experimenters often need a variable capacitor to tune their circuits, as the saying goes, for maximum smoke. In decades past these were readily available from almost any scrap radio, but the ...