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A generator can also be driven by human muscle power (for instance, in field radio station equipment). Protesters at Occupy Wall Street using bicycles connected to a motor and one-way diode to charge batteries for their electronics [22] Human powered electric generators are commercially available, and have been the project of some DIY ...
German scientist Otto von Guericke invented a device that creates static electricity. This is the first ever electric generator. 1705: English scientist Francis Hauksbee made a glass ball that glowed when spun and rubbed with the hand 1720: English scientist Stephen Gray made the distinction between insulators and conductors. 1745
"Dynamo Electric Machine" (end view, partly section, U.S. patent 284,110) A dynamo is an electrical generator that creates direct current using a commutator.Dynamos were the first electrical generators capable of delivering power for industry, and the foundation upon which many other later electric-power conversion devices were based, including the electric motor, the alternating-current ...
Chicago History Museum is the museum of the Chicago Historical Society (CHS). The CHS was founded in 1856 to study and interpret Chicago's history. The museum has been located in Lincoln Park since the 1930s at 1601 North Clark Street at the intersection of North Avenue in the Old Town Triangle neighborhood, where the museum has been expanded several times.
Invented by Ernest Moench, the machinery featured a durable needle that punched loops of thick fabric through a web of backing material, resulting in the reliable, high-speed tufting of carpet. Descendants of the apparatus fabricate more than three-quarters of the carpets produced in the US. 1928 Dalton Georgia United States ASME brochure: 267: ...
The largest air-insulated Van de Graaff generator in the world, built by Dr. Van de Graaff in the 1930s, is now displayed permanently at Boston's Museum of Science. With two conjoined 4.5 m (15 ft) aluminium spheres standing on columns 22 ft (6.7 m) tall, this generator can often obtain 2 MV (2 million volts ).
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An electrostatic generator, or electrostatic machine, is an electrical generator that produces static electricity, or electricity at high voltage and low continuous current. The knowledge of static electricity dates back to the earliest civilizations, but for millennia it remained merely an interesting and mystifying phenomenon , without a ...