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   Thomas Edison

   Thomas Edison and Harold Brown provided the AC generators needed for the first working electric chairs. ... The Wizard of Menlo Park: How Thomas Alva Edison Invented the Modern World.
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   Electric motor

   The first commutator-type direct current electric motor capable of turning machinery was invented by the British scientist William Sturgeon in 1832. ... Other Sprague electric inventions about this time greatly improved grid electric distribution [prior work done while employed by Edison], allowed power from electric motors to be returned to the electric grid, provided for electric distribution to trolleys via overhead wires and the trolley pole, and provided controls systems for electric operations.
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   1900s (decade)

   The decade from January 1, 1900 to December 31, 1909 is sometimes referred to as the 1900s, "the nineteen hundreds", although this term can equally be used for the years 1900–1999. ... 1907 Thomas Edison invented the "Universal Electric Motor" which made it possible to operate dictation machines, etc. on all lighting circuits.
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   Electric pen

   Thomas Edison's electric pen, part of a complete outfit for duplicating handwritten documents and drawings, was the first electric motor driven office appliance produced and sold in the United States.
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   George Westinghouse

   In 1878 Edison invented an improved incandescent light bulb, and realized the need for an electrical distribution system to provide power for lighting. ... The Serbian-American inventor Nikola Tesla had already devised the principles of a polyphase electric motor.
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   List of Edison patents

   Thomas Edison was an inventor who, it is said, accumulated 1500-plus patents worldwide for his inventions. ... U.S. Patent 0,248,429 -- Electric Motor
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   Frank J. Sprague

   Frank Julian Sprague (July 25, 1857 in Milford, Connecticut - October 25, 1934) was an American naval officer and inventor who contributed to the development of the electric motor, electric railways, and electric elevators. ... Thomas Edison
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   Electric car

   Thomas Edison and an electric car in 1913 (courtesy of the National Museum of American History) ... ↑ "Electric Motor Show" (in English, available in Finnish).
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   Edison Records

   Thomas A. Edison invented the phonograph, the first device for recording and playing back sound, in 1877. ... | Founder | Thomas Edison Jesse H. Lippincott |
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    War of Currents

    In the "War of Currents" era (sometimes, "War of the Currents" or "Battle of Currents") in the late 1880s, George Westinghouse and Thomas Edison became adversaries due to Edison's promotion of direct current (DC) for electric power distribution over alternating current (AC) advocated by Westinghouse and Nikola Tesla. ... At the introduction of Edison's system, no practical AC motor was available.

Explore the following pages on Powerset:

• Thomas Edison,
• Electric motor,
• 1900s (decade),
• Electric pen,
• George Westinghouse,
• List of Edison patents,
• Frank J. Sprague,
• Electric car,
• Edison Records,
• War of Currents

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