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Reginald Fessenden
Reginald Aubrey Fessenden (October 6, 1866 – July 22, 1932) was a Canadian-born inventor, who did a majority of his work in the United States and also claimed U.S. citizenship through his American-born father.[1] During his life he received hundreds of patents in various fields, most notably ones related to radio and sonar. Fessenden is best known for his pioneering work developing radio technology, including the foundations of amplitude modulation (AM) radio. His achievements included the first transmission of speech by radio (1900), and the first two-way radiotelegraphic communication across the Atlantic Ocean (1906)
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Arc Converter
The arc converter, sometimes called the arc transmitter, or Poulsen arc after Danish engineer Valdemar Poulsen
Valdemar Poulsen
who invented it in 1903,[1][2] was a variety of spark transmitter used in early wireless telegraphy. The arc converter used an electric arc to convert direct current electricity into radio frequency alternating current. It was used as a radio transmitter from 1903 until the 1920s when it was replaced by vacuum tube transmitters. One of the first transmitters that could generate continuous sinusoidal waves, it was one of the first technologies used to transmit sound (amplitude modulation) by radio
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Pittsburgh
AlleghenyHistoric empires France Great BritainHistoric colonies New France Quebec VirginiaFounded November 27, 1758Municipal incorporation April 22, 1794 (Borough) March 18, 1816 (City)Founded by George Washington, General John ForbesNamed for "The Great Commoner": Prime Minister William PittGovernment • Type Mayor-Council • Mayor Bill Peduto
Bill Peduto
(D) •  City
City
CouncilCouncilmembersDarlene Harris Theresa Kail-Smith Bruce Kraus (President) Anthony Coghill Corey O'Connor Daniel Lavelle Deborah Gross Dan Gilman Rev. Ricky Burgess • State HouseRepresentativesJake Wheatley Don Walko Dominic Costa Chelsa Wagner Dan Frankel Joseph Preston, Jr. Dan Deasy Paul Costa Harry Readshaw • State Senate Wayne D. Fontana
Wayne D

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Quebec
Quebec
Quebec
(/k(w)ɪˈbɛk/ ( listen);[8] French: Québec [kebɛk] ( listen))[9] is one of the thirteen provinces and territories of Canada. It is bordered to the west by the province of Ontario
Ontario
and the bodies of water James Bay
James Bay
and Hudson Bay; to the north by Hudson Strait
Hudson Strait
and Ungava Bay; to the east by the Gulf of Saint Lawrence and the province of Newfoundland and Labrador; and to the south by the province of New Brunswick
New Brunswick
and the U.S. states of Maine, New Hampshire, Vermont, and New York. It also shares maritime borders with Nunavut, Prince Edward Island, and Nova Scotia. Quebec
Quebec
is Canada's largest province by area and its second-largest administrative division; only the territory of Nunavut
Nunavut
is larger
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George Westinghouse
George Westinghouse
George Westinghouse
Jr. (October 6, 1846 – March 12, 1914) was an American entrepreneur and engineer based in Pittsburgh, Pennsylvania who invented the railway air brake and was a pioneer of the electrical industry, gaining his first patent at the age of 19. Westinghouse saw the potential in alternating current as an electricity distribution system in the early 1880s and put all his resources into developing and marketing it, a move that put his business in direct competition with the Edison direct current system
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World Columbian Exposition
The World's Columbian Exposition
World's Columbian Exposition
(the official shortened name for the World's Fair: Columbian Exposition,[1] also known as the Chicago World's Fair and Chicago
Chicago
Columbian Exposition) was a world's fair held in Chicago
Chicago
in 1893
1893
to celebrate the 400th anniversary of Christopher Columbus's arrival in the New World
New World
in 1492.[2] The centerpiece of the Fair, the large water pool, represented the long voyage Columbus took to the New World. Chicago
Chicago
bested New York City; Washington, D.C.; and St. Louis
St. Louis
for the honor of hosting the fair
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Vacuum-tube
In electronics, a vacuum tube, an electron tube,[1][2][3] or just a tube (North America), or valve (Britain and some other regions) is a device that controls electric current between electrodes in an evacuated container. Vacuum
Vacuum
tubes mostly rely on thermionic emission of electrons from a hot filament or a heated cathode. This type is called a thermionic tube or thermionic valve. A phototube, however, achieves electron emission through the photoelectric effect. Not all electronic circuit valves/electron tubes are vacuum tubes (evacuated); gas-filled tubes are similar devices containing a gas, typically at low pressure, which exploit phenomena related to electric discharge in gases, usually without a heater. The simplest vacuum tube, the diode, contains only a heater, a heated electron-emitting cathode (the filament itself acts as the cathode in some diodes), and a plate (anode)
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Archimedes
Archimedes
Archimedes
of Syracuse (/ˌɑːrkɪˈmiːdiːz/;[2] Greek: Ἀρχιμήδης; c. 287 – c. 212 BC) was a Greek mathematician, physicist, engineer, inventor, and astronomer.[3] Although few details of his life are known, he is regarded as one of the leading scientists in classical antiquity. Generally considered the greatest mathematician of antiquity and one of the greatest of all time,[4][5] Archimedes
Archimedes
anticipated modern calculus and analysis by applying concepts of infinitesimals and the method of exhaustion to derive and rigorously prove a range of geometrical theorems, including the area of a circle, the surface area and volume of a sphere, and the area under a parabola.[6] Other mathematical achievements include deriving an accurate approximation of pi, defining and investigating the spiral bearing his name, and creating a system using exponentiation for expressing very large numbers
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West Orange, New Jersey
West Orange is a suburban[22][23] township in central Essex County, New Jersey, United States. As of the 2010 United States
United States
Census, the township's population was 46,207,[10][11][12] reflecting an increase of 1,264 (+2.8%) from the 44,943 counted in the 2000 Census, which had in turn increased by 5,840 (+14.9%) from the 39,103 counted in the 1990 Census.[24]Contents1 History 2 Geography2.1 Neighborhoods3 Demographics3.1 Census 2000 3.2 Census 20104 Economy 5 Sports 6 Parks and recreation 7 Government7.1 Local government 7.2 Municipal court 7.3 Politics 7.4 Federal, state and county representation8 Education 9 Transportation9.1 Roads and highways 9.2 Public transportation10 Mass media and telecommunications 11 Notable people 12 References 13 External linksHistory[edit] West Orange was originally part of the Native American Hackensack clan's territory, for over 10,000 years
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Potomac River
28.10 feet (8.56 m) on 19 Mar 1936 [3]The Potomac River
River
watershed covers the District of Columbia
District of Columbia
and parts of four statesThe Potomac River
River
(/pəˈtoʊmək/ ( listen)) is located within the Mid-Atlantic region of the United States
United States
and flows from the Potomac Highlands into the Chesapeake Bay. The river (main stem and North Branch) is approximately 405 miles (652 km) long,[4] with a drainage area of about 14,700 square miles (38,000 km2).[5] In terms of area, this makes the Potomac River
River
the fourth largest river along the Atlantic coast of the United States
United States
and the 21st largest in the United States
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McGill University
McGill University
University
is a coeducational public research university in Montreal, Quebec, Canada
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Washington, DC
Washington, D.C., formally the District of Columbia
District of Columbia
and commonly referred to as Washington or D.C., is the capital of the United States of America.[4] Founded after the American Revolution
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Oliver Lodge
Sir Oliver Joseph Lodge, FRS[1] (12 June 1851 – 22 August 1940) was a British physicist and writer involved in the development of, and holder of key patents for, radio. He identified electromagnetic radiation independent of Hertz' proof and at his 1894 Royal Institution lectures ("The Work of Hertz and Some of His Successors"), Lodge demonstrated an early radio wave detector he named the "coherer". In 1898 he was awarded the "syntonic" (or tuning) patent by the United States Patent Office
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Lennoxville, Quebec
Lennoxville is an arrondissement, or borough, of the city of Sherbrooke, Quebec, Canada. Lennoxville is located at the confluence of the St. Francis and Massawippi Rivers approximately five kilometres south of downtown Sherbrooke. Lennoxville had previously existed as an independent city until Jan. 1, 2002, when the city of Lennoxville, along with several other formerly independent towns and cities in the region, were merged with the city of Sherbrooke. A demerger referendum held on June 20, 2004 failed to attract the required majority of votes to reestablish Lennoxville as an independent city.[2]Contents1 History 2 Government 3 Linguistic profile 4 Education 5 Transportation 6 References 7 External linksHistory[edit] Lennoxville was first settled in 1819, although the Mallory family began farming at the edge of the eventual town limits in 1804. Its name was taken from Charles Lennox, 4th Duke of Richmond, who was then Governor General of Canada
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Port Hope, Ontario
Port Hope is a municipality in Southern Ontario, Canada, about 109 kilometres (68 mi) east of Toronto
Toronto
and about 159 kilometres (99 mi) west of Kingston. It is located at the mouth of the Ganaraska River
Ganaraska River
on the north shore of Lake Ontario, in the west end of Northumberland County. Port Hope's nearest urban neighbour (25 km to the west) is the City of Oshawa
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