The Richmond Union Passenger Railway, in Richmond, Virginia, was the first practical electric trolley (tram) system, and set the pattern for most subsequent electric trolley systems around the world. ...
The design of AC induction and synchronous motors is optimized for operation on single-phase or polyphase sinusoidal or quasi-sinusoidal waveform power such as supplied for fixed-speed application fro ...
Main article: History of the electric motorEarly motors Faraday's electromagnetic experiment, 1821Perhaps the first electric motors were simple electrostatic devices created by the Scottish monk Andre ...
The brushed DC electric motor generates torque directly from DC power supplied to the motor by using internal commutation, stationary magnets (permanent or electromagnets), and rotating electrical mag ...
Sprague was born in Milford, Connecticut in 1857 to David Cummings Sprague and Francis Julia King Sprague. He attended Drury High School in North Adams, Massachusetts and excelled in mathematics. In 1 ...
Paul (Louis-Toussaint) Héroult (April 10, 1863 – May 9, 1914) was a French scientist. He was the inventor of the aluminium electrolysis and of the electric steel furnace. He lived in Thury-Harcourt, ...
Hall was born to Herman Bassett Hall and Sophronia H. Brooks on December 6, 1863 in Thompson, Ohio. His father graduated from Oberlin College in 1847, and studied for three years at the Oberlin Theolo ...
Henry Albert Fleuss (1851–1932) was a pioneering diving engineer, and Master Diver for Siebe, Gorman Co. of London.Fleuss was born in Marlborough, Wiltshire in 1851.In 1878 he was granted a patent w ...
An atmospheric diving suit is a small one-man articulated submersible of roughly anthropomorphic form, with limb joints which allow articulation under external pressure while maintaining an internal p ...
General concept As a person breathes, the body consumes oxygen and produces carbon dioxide. Base metabolism requires about 0.25 L/min of oxygen from a breathing rate of about 6 L/min, and a fit person ...
Thomas Edison has appeared in popular culture as a character in novels, films, comics and video games. His prolific inventing helped make him an icon and he has made appearances in popular culture dur ...
Edison was active in business right up to the end. Just months before his death, the Lackawanna Railroad inaugurated suburban electric train service from Hoboken to Montclair, Dover, and Gladstone in ...
Thomas Edison was born in Milan, Ohio, and grew up in Port Huron, Michigan. He was the seventh and last child of Samuel Ogden Edison, Jr. (1804–1896, born in Marshalltown, Nova Scotia, Canada) and Na ...
A smooth-tipped stylus (in popular usage often called a needle due to the former use of steel needles for the purpose) is used to play the recorded groove. A special chisel-like stylus is used to engr ...
Historically, most high-fidelity "component" systems (preamplifiers or receivers) that accepted input from a phonograph turntable had separate inputs for both ceramic and magnetic cartridges (typicall ...
