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Electric and field
Electric current produces a magnetic field.
The efforts of the two did much to further electrical engineering — Tesla's work on induction motors and polyphase systems influenced the field for years to come, while Edison's work on telegraphy and his development of the stock ticker proved lucrative for his company, which ultimately became General Electric.
Electric field of a positive and a negative point charge.
* Electric field integration
* Electric field screening
Electric field lines emanating from a point positive electric charge suspended over a negatively-charged infinite sheet
Electric fields contain electrical energy with energy density proportional to the square of the field amplitude.
Electric field from a positive QElectric field from a negative Q
Electric field from a negative Q where Coulomb's law, which describes the interaction of electric charges:
* Electric field in " Electricity and Magnetism ", R Nave-Hyperphysics, Georgia State University
* Electric Fields Applet-An applet that shows electric field lines as well as potential gradients.
simple: Electric field
Electric field inside an x-band hollow metal waveguide.
Electric field lines for this mode have a longitudinal component and require line lengths of a half-wavelength or longer.
Electric field measurements in thunderclouds are typically not large enough to directly initiate a discharge.
** Electric displacement field, as appears in Maxwell's equations
# REDIRECT Electric field
Electric current flowing in the coils of the tape head creates a fluctuating magnetic field.
Electric sparks require a field strength above about 4 KV / cm in air, as notably occurs in lightning strikes.
Field Emission Electric Propulsion ( FEEP ) is an electrostatic propulsion concept based on field ionization of a liquid metal and subsequent acceleration of the ions by a strong electric field.
* Electric sensors at the ends of opposing booms are used to measure potential differences between separated points, to derive electric field associated with convection.
Interest in robotics increased in the late 1970s and many US companies entered the field, including large firms like General Electric, and General Motors ( which formed joint venture FANUC Robotics with FANUC LTD of Japan ).

Electric and lines
* Edgar Speyer, chairman of the Underground Electric Railways Company of London ( UERL, forerunner of the London Underground ) from 1906 to 1915, a period during which the company opened three underground railway lines, electrified a fourth and took over two more.
Electric power can also be transmitted by underground power cables instead of overhead power lines.
After this venture failed, electric trams returned on 5 May 1906, with the opening of the Victorian Railways ' " Electric Street Railway " from St Kilda to Brighton, and was followed on 11 October 1906 with the opening of the North Melbourne Electric Tramway and Lighting Company ( NMETL ) system, which opened two lines from the cable tram terminus at Flemington Bridge to Essendon and Saltwater River ( now Maribyrnong River ).
It is the first of the MTA's modern rail lines since the 1961 demise of the Pacific Electric Railway's Red Car system.
Four different Metra commuter rail lines ( Metra Electric Main Line, Southwest Service, Rock Island District and Heritage Corridor ) connect the parts of the county with the Chicago Loop.
He announced an agreement with the Houston Electric Company on April 12, 1940, through which the company could convert its four remaining lines to buses, in exchange for the right-of-way used by the Park Place line.
Wooden carriages were originally hauled by steam locomotives, and at the start of the 20th century the District and Metropolitan were seeing increased competition in central London from the new Underground Electric Railways of London ( UERL ) tube lines and the use of buses.
Also in 1912, both the Phoenix Street Railway Company and a competitor, the Salt River Valley Electric Railway Company, proposed building streetcar lines to Scottsdale but due to an economic downturn, neither was built.
The plan included a 50 percent equity stake by Ripplewood Holdings and lines / loans by General Electric Capital and GE Capital Markets, Silver Point Finance and Monarch Master Funding.
Glen Rock Electric Light and Power Company first ran electric lines through town in 1922.
Hanshin Electric Railway Main Line and West Japan Railway Company ( JR West ) Tokaido Main Line ( this section nicknamed JR Kobe Line ) are the two lines perpendicular to the Hankyu Kobe Line with short distances.
On these lines, the company does not run its own services but provides the necessary infrastructure for four private railway lines ( Hankyu Kobe Line ( Hankyu ), Hanshin Main Line ( Hanshin ), Shintetsu Arima Line ( Shintetsu ) and Sanyo Electric Railway Main Line ( Sanyo ) to be able to run trains through Kobe.
* Chicago — Metra Electric Line extending southward from the city, and NICTD's South Shore Line into northern Indiana, share several features with S-Bahn lines such as dedicated trackage, grade separation, high level platforms, and electrification.
The city government launched separate network of streetcars ( 1, 435 mm standard gauge ) in 1912, which absorbed the lines of Kyoto Electric Railway in 1918.
Electric traction allows the use of regenerative braking, in which the motors are used as brakes and become generators that transform the motion of, usually, a train into electrical power that is then fed back into the lines.
Electric service on the Hudson and Harlem lines uses M3 and M7 MU cars.
Some of the former right-of-ways of the Pacific Electric Railway, which first accelerated population growth in the Valley, have been repurposed for busways and light rail lines.
Following the purchase of the MDR by the Underground Electric Railways Company of London in 1902, the planned MDR and B & PCR lines were merged with a third proposed route from the Great Northern and Strand Railway.
A warehouse was reduced in size to make way for the project, as well as the relocation of Atlantic City Electric power lines leading to a substation.

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