rotary magnets

Sturgeon electromagnet invention, so that people see the magnetic traps into magnetic energy of a bright future, this invention quickly spread in the United Kingdom, the United States and Western Europe, some coastal countries. In 1829, the US electrical scientist Henry Sturgeon electromagnet means a number of innovations, wires instead of bare copper wire, copper wire and therefore do not have to worry about being too close to a short-circuit. Since the wire with insulation, they can be wound together tightly around the enclosure, rotary magnets since more intensive coil, the stronger the magnetic field generation, thus greatly improving the ability to convert electrical energy into magnetic energy. To the 1831 trial out of a Henry update electromagnet, although its volume is not large, but it can pick up one ton heavy iron. Electromagnet invention also enables the generator power has been greatly improved