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133-420: Edison Bridge , the name of various bridges named after Thomas Edison , may refer to Edison Bridge (Florida) Edison Bridge (New Jersey) Edison Bridge (Ohio) Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title Edison Bridge . If an internal link led you here, you may wish to change

266-736: A botanical laboratory in Fort Myers, Florida , in collaboration with businessmen Henry Ford and Harvey S. Firestone , and a laboratory in West Orange, New Jersey , that featured the world's first film studio , the Black Maria . With 1,093 US patents in his name , as well as patents in other countries, Edison is regarded as the most prolific inventor in American history. Edison married twice and fathered six children. He died in 1931 due to complications from diabetes . Thomas Edison

399-475: A "chunk of it". The representatives decided to give a cubic foot of solid copper weighing 486 pounds with their gratitude inscribed on it in appreciation for his part in the "continuous stimulation in the copper industry". Edison is credited with designing and producing the first commercially available fluoroscope , a machine that uses X-rays to take radiographs . Until Edison discovered that calcium tungstate fluoroscopy screens produced brighter images than

532-401: A $ 50-a-week profit by age 13, most of which went to buying equipment for electrical and chemical experiments. At age 15, in 1862, he saved 3-year-old Jimmie MacKenzie from being struck by a runaway train. Jimmie's father, station agent J. U. MacKenzie of Mount Clemens, Michigan , was so grateful that he trained Edison as a telegraph operator. Edison's first telegraphy job away from Port Huron

665-665: A 20-year friendship although they wrote about different sides of the war. Macaulay wrote from a loyalist British perspective whereas Warren wrote about her support for the American Revolution. Macaulay's work include History of England and Warren wrote History of the Rise , Progress , and Termination of the American Revolution. Although both women's works were unpopular, during this time, it pushed them to learn from social critique. Rebel agents were active in Quebec (which

798-471: A bid. He was surprised to hear them offer $ 10,000 ($ 269,294 in 2023), which he gratefully accepted. The quadruplex telegraph was Edison's first big financial success, and Menlo Park became the first institution set up with the specific purpose of producing constant technological innovation and improvement. Edison was legally credited with most of the inventions produced there, though many employees carried out research and development under his direction. His staff

931-574: A businessman. Ultimately, his entrepreneurship was central to the formation of some 14 companies, including General Electric , formerly one of the largest publicly traded companies in the world. In 1866, at the age of 19, Edison moved to Louisville, Kentucky , where, as an employee of Western Union , he worked the Associated Press bureau news wire . Edison requested the night shift, which allowed him plenty of time to spend at his two favorite pastimes—reading and experimenting. Eventually,

1064-463: A chemistry course at The Cooper Union for the Advancement of Science and Art to support his work on a new telegraphy system with Charles Batchelor . This appears to have been his only enrollment in courses at an institution of higher learning. Thomas Edison began his career as a news butcher , selling newspapers, candy, and vegetables on trains running from Port Huron to Detroit. He turned

1197-436: A child, he became fascinated with technology and spent hours working on experiments at home. Edison developed hearing problems at the age of 12. The cause of his deafness has been attributed to a bout of scarlet fever during childhood and recurring untreated middle-ear infections . He subsequently concocted elaborate fictitious stories about the cause of his deafness. He was completely deaf in one ear and barely hearing in

1330-582: A coiled platinum filament but the high cost of platinum kept the bulb from becoming a commercial success. Many other inventors had also devised incandescent lamps, including Alessandro Volta 's demonstration of a glowing wire in 1800 and inventions by Henry Woodward and Mathew Evans . Others who developed early and commercially impractical incandescent electric lamps included Humphry Davy , James Bowman Lindsay , Moses G. Farmer , William E. Sawyer , Joseph Swan , and Heinrich Göbel . These early bulbs all had flaws such as an extremely short life and requiring

1463-688: A commercially viable electric light bulb on October 21, 1879, Edison developed an electric " utility " to compete with the existing gas light utilities. On December 17, 1880, he founded the Edison Illuminating Company , and during the 1880s, he patented a system for electricity distribution . The company established the first investor-owned electric utility. On September 4, 1882, in Pearl Street , New York City, his 600 kW cogeneration steam-powered generating station, Pearl Street Station 's, electrical power distribution system

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1596-466: A conflicted situation; they were often looked down upon. Patriots watched suspected Loyalists very closely and would not tolerate any organized Loyalist opposition. Many outspoken or militarily active Loyalists were forced to flee, especially to their stronghold of New York City . William Franklin , the royal governor of New Jersey and son of Patriot leader Benjamin Franklin , became the leader of

1729-521: A draftsman and an expert witness in patent litigation, began working for the United States Electric Lighting Company run by Edison's rival Hiram S. Maxim . While working for Maxim, Latimer invented a process for making carbon filaments for light bulbs and helped install broad-scale lighting systems for New York City, Philadelphia, Montreal, and London. Latimer holds the patent for the electric lamp issued in 1881, and

1862-541: A grooved cylinder. Despite its limited sound quality and that the recordings could be played only a few times, the phonograph made Edison a celebrity. Joseph Henry , president of the National Academy of Sciences and one of the most renowned electrical scientists in the US, described Edison as "the most ingenious inventor in this country... or in any other". In April 1878, Edison traveled to Washington to demonstrate

1995-402: A high electric current to operate which made them difficult to apply on a large scale commercially. In his first attempts to solve these problems, Edison tried using a filament made of cardboard, carbonized with compressed lampblack. This burnt out too quickly to provide lasting light. He then experimented with different grasses and canes such as hemp, and palmetto, before settling on bamboo as

2128-414: A large concentration of Loyalists, many of whom were refugees from other states. According to Calhoon, Loyalists tended to be older and wealthier, but there were also many Loyalists of humble means. Many active Church of England members became Loyalists. Some recent arrivals from Britain, especially those from Scotland, had a high Loyalist proportion. Loyalists in the southern colonies were suppressed by

2261-415: A large part of the market without electrical service. AC companies expanded into this gap. Edison expressed views that AC was unworkable and the high voltages used were dangerous. As George Westinghouse installed his first AC systems in 1886, Thomas Edison struck out personally against his chief rival stating, " Just as certain as death, Westinghouse will kill a customer within six months after he puts in

2394-461: A loyalist or a patriot; the label was dependent on their husband's political association. However, some women showed their loyalty to the crown by continually purchasing British goods, writing it down, and showing resistance to the Patriots. Grace Growden Galloway recorded the experience in her diary. Her writings show the difficulties that her family faced during the revolution. Galloway's property

2527-561: A number of nearby private dwellings, but was shut down in September 1886 as uneconomic, since he was unable to extend the premises. On January 19, 1883, the first standardized incandescent electric lighting system employing overhead wires began service in Roselle, New Jersey . As Edison expanded his direct current (DC) power delivery system, he received stiff competition from companies installing alternating current (AC) systems. From

2660-655: A peaceful reconciliation but were forced to choose sides by the Patriots who took control nearly everywhere in the Thirteen Colonies in 1775–76. Yale historian Leonard Woods Larabee has identified eight characteristics of the Loyalists that made them essentially conservative and loyal to the King and to Britain: Other motives of the Loyalists included: In the opening months of the Revolutionary War,

2793-672: A regular army status, enrolled 19,000 Loyalists (50 units and 312 companies). The maximum strength of the Loyalist provincial line was 9,700 in December 1780. In all about 19,000 at one time or another were soldiers or militia in British forces. Loyalists from South Carolina fought for the British in the Battle of Camden . The British forces at the Battle of Monck's Corner and the Battle of Lenud's Ferry consisted entirely of Loyalists with

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2926-552: A second patent for the "process of manufacturing carbons" (the filament used in incandescent light bulbs), issued in 1882. On October 8, 1883, the US patent office ruled that Edison's patent was based on the work of William E. Sawyer and was, therefore, invalid. Litigation continued for nearly six years. In 1885, Latimer switched camps and started working with Edison. On October 6, 1889, a judge ruled that Edison's electric light improvement claim for "a filament of carbon of high resistance"

3059-628: A son of Loyalists, participated in the Upper Canada Rebellion which sought relief from oligarchic British colonial government and pursued American style Republicanism . He was arrested, tried and executed in Toronto , and later became heralded as a patriot to the movement which led to Canadian self-governance. The wealthiest and most prominent Loyalist exiles went to Great Britain to rebuild their careers; many received pensions. Many Southern Loyalists, taking along their slaves, went to

3192-466: A system of any size. He has got a new thing and it will require a great deal of experimenting to get it working practically. " Many reasons have been suggested for Edison's anti-AC stance. One notion is that the inventor could not grasp the more abstract theories behind AC and was trying to avoid developing a system he did not understand. Edison also appeared to have been worried about the high voltage from misinstalled AC systems killing customers and hurting

3325-484: A token of compensation when he returned from England in 1796, his son was allowed to regain the family house. In many States, moderate Whigs, who had not been in favor of separation from Britain but preferred a negotiated settlement which would have maintained ties to the Mother Country, aligned with Tories to block radicals. Among these was Alexander Hamilton in 1782–85, to wrest control of New York State from

3458-574: A treaty of neutrality in the interior community of Ninety Six , South Carolina . For actively aiding the British army when it occupied Philadelphia, two residents of the city were tried for treason, convicted, and executed by returning Patriot forces. As a result of the looming crisis in 1775, the Royal Governor of Virginia , Lord Dunmore , issued a proclamation that promised freedom to indentured servants and slaves who were able to bear arms and join his Loyalist Ethiopian Regiment . Many of

3591-598: Is notably the first US patent for an electronic device due to its use of an Edison effect bulb as an active component . Subsequent scientists studied, applied, and eventually evolved the bulbs into vacuum tubes , a core component of early analog and digital electronics of the 20th century. In 1878, Edison formed the Edison Electric Light Company in New York City with several financiers, including J. P. Morgan , Spencer Trask , and

3724-590: Is now modern-day Ontario , the rest to Nova Scotia and PEI. Realizing the importance of some type of consideration, on November 9, 1789, Lord Dorchester , the governor of Quebec, declared that it was his wish to "put the mark of Honour upon the Families who had adhered to the Unity of the Empire ." As a result of Dorchester's statement, the printed militia rolls carried the notation: Those Loyalists who have adhered to

3857-582: Is now the Czech Republic), opened in 1882, and was the first public building in the world to use Edison's electric lamps. Francis Jehl , Edison's assistant in the invention of the lamp, supervised the installation. In September 2010, a sculpture of three giant light bulbs was erected in Brno, in front of the theater. The first Edison light bulbs in the Nordic countries were installed at the weaving hall of

3990-500: Is registered on 1,093 patents. Edison began his career as an inventor in Newark, New Jersey , with the automatic repeater and his other improved telegraphic devices, but the invention that first gained him wider notice was the phonograph in 1877. This accomplishment was so unexpected by the public at large as to appear almost magical. Edison became known as "The Wizard of Menlo Park". His first phonograph recorded on tinfoil around

4123-586: The Columbia . Although hesitant at first, Edison agreed to Villard's request. Most of the work was completed in May 1880, and the Columbia went to New York City, where Edison and his personnel installed Columbia 's new lighting system. The Columbia was Edison's first commercial application for his incandescent light bulb. The Edison equipment was removed from Columbia in 1895. In 1880, Lewis Latimer ,

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4256-530: The 1st Middlesex Militia during the War of 1812. His father, Samuel Edison Jr. moved to Vienna, Ontario , and fled to Ohio after his involvement in the Rebellion of 1837 . Edison was taught reading, writing, and arithmetic by his mother, a former school teacher. He attended school for only a few months. However, one biographer described him as a very curious child who learned most things by reading on his own. As

4389-683: The Act Against Slavery tried to suppress slavery in Upper Canada by halting the sale of slaves to the United States, and by freeing slaves upon their escape from the latter into Canada. Simcoe desired to demonstrate the merits of loyalism and abolitionism in Upper Canada in contrast to the nascent republicanism and prominence of slavery in the United States , and, according to historian Stanley R. Mealing: However

4522-461: The Chesapeake area. Eventually the camp that they had set up there suffered an outbreak of smallpox and other diseases. This took a heavy toll, putting many of them out of action for some time. The survivors joined other Loyalist units and continued to serve throughout the war. African-Americans were often the first to come forward to volunteer and a total of 12,000 African Americans served with

4655-654: The English-speaking settlers had arrived following the British conquest of Canada in 1759–1760, and were unlikely to support separation from Britain. The older British colonies, Newfoundland and Nova Scotia (including what is now New Brunswick ) also remained loyal and contributed military forces in support of the Crown. In late 1775 the Continental Army sent a force into Quebec , led by General Richard Montgomery and Colonel Benedict Arnold , with

4788-794: The Finlayson 's textile factory in Tampere, Finland in March 1882. In 1901, Edison attended the Pan-American Exposition in Buffalo, New York . His company, the Edison Manufacturing Company , was given the task of installing the electric lights on the various buildings and structures that were built for the exposition. At night Edison made a panorama photograph of the illuminated buildings. After devising

4921-456: The Southern campaigns of 1780 and 1781. Britain was able to effectively protect the people only in areas where they had military control, and in return, the number of military Loyalists was significantly lower than what had been expected. Due to conflicting political views, loyalists were often under suspicion of those in the British military, who did not know whom they could fully trust in such

5054-535: The Thomson-Houston Electric Company of Lynn, Massachusetts (another AC-based competitor) built 22 power stations. Parallel to expanding competition between Edison and the AC companies was rising public furor over a series of deaths in the spring of 1888 caused by pole mounted high voltage alternating current lines. This turned into a media frenzy against high voltage alternating current and

5187-672: The West Indies , particularly to the Abaco Islands in the Bahamas . Certain Loyalists who fled the United States brought their slaves with them to Canada (mostly to areas that later became Ontario and New Brunswick ) where slavery was legal . An imperial law in 1790 assured prospective immigrants to Canada that their slaves would remain their property. However, a law enacted by eminent British lieutenant general and founder of modern Toronto John Graves Simcoe in 1793 entitled

5320-559: The 1790s attracted by Lieutenant-Governor Simcoe 's policy of land and low taxes, one-fifth those in the US and swearing an oath of allegiance to the King. The 36,000 or so who went to Nova Scotia were not well received by the 17,000 Nova Scotians, who were mostly descendants of New Englanders settled there before the Revolution. "They [the Loyalists]", Colonel Thomas Dundas wrote in 1786, "have experienced every possible injury from

5453-407: The 1880s that used wax-coated cardboard cylinders. In 1876, Edison began work to improve the microphone for telephones (at that time called a "transmitter") by developing a carbon microphone , which consists of two metal plates separated by granules of carbon that would change resistance with the pressure of sound waves. A steady direct current is passed between the plates through the granules and

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5586-609: The 1889 merger that formed Edison General Electric. In 1890 he told president Henry Villard he thought it was time to retire from the lighting business and moved on to an iron ore refining project that preoccupied his time. Edison's dogmatic anti-AC values were no longer controlling the company. By 1889 Edison's Electric's own subsidiaries were lobbying to add AC power transmission to their systems and in October 1890 Edison Machine Works began developing AC-based equipment. Cut-throat competition and patent battles were bleeding off cash in

5719-500: The American Revolution, and many felt themselves to be both American and British, still owing loyalty to the mother country. Maryland lawyer Daniel Dulaney the Younger opposed taxation without representation but would not break his oath to the King or take up arms against him. He wrote: "There may be a time when redress may not be obtained. Till then, I shall recommend a legal, orderly, and prudent resentment". Most Americans hoped for

5852-541: The Bahamas, and about 13,000 went to Britain (including 5,000 free blacks). The total is 60–62,000 whites. A precise figure cannot be known because the records were incomplete and inaccurate, and small numbers continued to leave after 1783. The 50,000 or so white departures represented about 10% of the Loyalists (at 20–25% of the white population). Loyalists (especially soldiers and former officials) could choose evacuation. Loyalists whose roots were not yet deeply embedded in

5985-484: The British from 1775 to 1783. This forced the Patriots to also offer freedom to those who would serve in the Continental Army, with thousands of Black Patriots serving in the Continental Army . Americans who gained their freedom by fighting for the British became known as Black Loyalists . The British honored the pledge of freedom in New York City through the efforts of General Guy Carleton , who recorded

6118-514: The British or the Americans. Although some Canadians took up arms in support of the rebellion, the majority remained loyal to the King. French Canadians had been satisfied by the British government's Quebec Act of 1774, which offered religious and linguistic toleration; in general, they did not sympathize with a rebellion that they saw as being led by Protestants from New England , who were their commercial rivals and hereditary enemies. Most of

6251-399: The British side in the Revolution went to London and joined the free black community of about 10,000 there. While men were out fighting for the Crown, women served at home protecting their land and property. At the end of the war, many loyalist men left America for the shelter of England, leaving their wives and daughters to protect their land. The main punishment for Loyalist families was

6384-630: The De Lancey, De Peyster, Walton and Cruger families undercut the interlocking families that largely owned and controlled the Hudson Valley. Likewise in Pennsylvania, the departure of powerful families—Penn, Allen, Chew, Shippen—destroyed the cohesion of the old upper class there. Massachusetts passed an act banishing forty-six Boston merchants in 1778, including members of some of Boston's wealthiest families. The departure of families such as

6517-550: The Ervings, Winslows, Clarks, and Lloyds deprived Massachusetts of men who had hitherto been leaders of networks of family and clients. The bases of the men who replaced them were much different. One rich Patriot in Boston noted in 1779 that "fellows who would have cleaned my shoes five years ago, have amassed fortunes and are riding in chariots." New men became rich merchants but they shared a spirit of republican equality that replaced

6650-475: The Goldenrod plant. Edison decided on Solidago leavenworthii , also known as Leavenworth's Goldenrod. The plant, which normally grows roughly 3–4 feet tall with a 5% latex yield, was adapted by Edison through cross-breeding to produce plants twice the size and with a latex yield of 12%. During the 1911 New York Electrical show, Edison told representatives of the copper industry it was a shame he did not have

6783-434: The Loyalists after his release from a Patriot prison in 1778. He worked to build Loyalist military units to fight in the war. Woodrow Wilson wrote that "there had been no less than twenty-five thousand loyalists enlisted in the British service during the five years of the fighting. At one time (1779) they had actually outnumbered the whole of the continental muster under the personal command of Washington." When their cause

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6916-472: The Loyalists. In areas under Patriot control, Loyalists were subject to confiscation of property , and outspoken supporters of the king were threatened with public humiliation such as tarring and feathering , or physical attack. It is not known how many Loyalist civilians were harassed by the Patriots, but the treatment was a warning to other Loyalists not to take up arms. In September 1775, William Drayton and Loyalist leader Colonel Thomas Fletchall signed

7049-545: The Patriots laid siege to Boston , where most of the British forces were stationed. Elsewhere there were few British troops and the Patriots seized control of all levels of government, as well as supplies of arms and gunpowder. Vocal Loyalists recruited people to their side, often with the encouragement and assistance of royal governors. In the South Carolina back country, Loyalist recruitment outstripped that of Patriots. A brief siege at Ninety Six, South Carolina in

7182-400: The Patriots were in control, but Loyalist civilian government was re-established in coastal Georgia from 1779 to 1782, despite the presence of Patriot forces in the northern part of Georgia. Essentially, the British were only able to maintain power in areas where they had a strong military presence. Historian Robert Calhoon wrote in 2000, concerning the proportion of Loyalists to Patriots in

7315-570: The Thirteen Colonies and expelled all royal officials. No one who openly proclaimed their loyalty to the Crown was allowed to remain, so Loyalists fled or kept quiet. Some of those who remained later gave aid to invading British armies or joined uniformed Loyalist regiments. The British were forced out of Boston by March 17, 1776. They regrouped at Halifax and attacked New York in August, defeating George Washington 's army at Long Island and capturing New York City and its vicinity, and they occupied

7448-487: The Thirteen Colonies: Historians' best estimates put the proportion of adult white male loyalists somewhere between 15 and 20 percent. Approximately half the colonists of European ancestry tried to avoid involvement in the struggle—some of them deliberate pacifists, others recent immigrants, and many more simple apolitical folk. The patriots received active support from perhaps 40 to 45 percent of

7581-634: The US electrical business and would compete with Westinghouse for the AC market. Edison served as a figurehead on the company's board of directors for a few years before selling his shares. Edison moved from Menlo Park after the death of his first wife, Mary, in 1884, and purchased a home known as " Glenmont " in 1886 as a wedding gift for his second wife, Mina , in Llewellyn Park in West Orange, New Jersey . In 1885, Thomas Edison bought 13 acres of property in Fort Myers , Florida, for roughly $ 2,750 (equivalent to $ 93,256 in 2023) and built what

7714-473: The US received over £3 million or about 37% of their losses from the British government. Loyalists who stayed in the US were generally able to retain their property and become American citizens. Many Loyalists eventually returned to the US after the war and discriminatory laws had been repealed. Historians have estimated that between 15% and 20% (300,000 to 400,000) of the 2,000,000 whites in the colonies in 1775 were Loyalists. Families were often divided during

7847-590: The United States provided the strength needed to keep Canada independent and distinct in North America. The Loyalists' basic distrust of republicanism and " mob rule " influenced Canada's gradual path to independence . The new British North American provinces of Upper Canada (the forerunner of Ontario) and New Brunswick were founded as places of refuge for the United Empire Loyalists. In an interesting historical twist Peter Matthews ,

7980-445: The United States were more likely to leave; older people who had familial bonds and had acquired friends, property, and a degree of social respectability were more likely to remain in the US. The vast majority of the half-million white Loyalists, about 20–25% of the total number of whites, remained in the US. Starting in the mid-1780s a small percentage of those who had left returned to the United States. The exiles amounted to about 2% of

8113-580: The United States. According to Jasanoff, the majority of these Loyalists – 36,000 – went to New Brunswick and Nova Scotia , while about 6,600 went to Quebec and 2,000 to Prince Edward Island . About 5,090 white Loyalists went to Florida, bringing along their slaves who numbered about 8,285 (421 whites and 2,561 blacks returned to the States from Florida). When Florida was returned to Spain, however, very few Loyalists remained there. Approximately 6,000 whites went to Jamaica and other Caribbean islands, notably

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8246-541: The United States; they stayed on and were allowed to be citizens of the new country, retaining for a time the earlier designation of "Tories". Some became nationally prominent leaders, including Samuel Seabury , who was the first Bishop of the Episcopal Church, and Tench Coxe . There was a small but significant trickle of returnees who found life in Nova Scotia and New Brunswick too difficult. Perhaps 10% of

8379-645: The Unity of the Empire, and joined the Royal Standard before the Treaty of Separation in the year 1783, and all their Children and their Descendants by either sex, are to be distinguished by the following Capitals, affixed to their names: U.E. Alluding to their great principle The Unity of the Empire. The post-nominals "U.E." are rarely seen today, but the influence of the Loyalists on the evolution of Canada remains. Their ties to Britain and/or their antipathy to

8512-521: The actual law was a compromise. According to historian Afua Cooper, Simcoe's law required children in slavery to be freed when they reached age 25 and: Thousands of Iroquois and other Native Americans were expelled from New York and other states and resettled in Canada. The descendants of one such group of Iroquois, led by Joseph Brant (Thayendenegea), settled at Six Nations of the Grand River ,

8645-424: The barium platinocyanide screens originally used by Wilhelm Röntgen , the technology was capable of producing only very faint images. The fundamental design of Edison's fluoroscope is still in use today, although Edison abandoned the project after nearly losing his own eyesight and seriously injuring his assistant, Clarence Dally . Dally made himself an enthusiastic human guinea pig for the fluoroscopy project and

8778-409: The best filament. Edison continued trying to improve this design and on November 4, 1879, filed for U.S. patent 223,898 (granted on January 27, 1880) for an electric lamp using "a carbon filament or strip coiled and connected to platina contact wires". The patent described several ways of creating the carbon filament including "cotton and linen thread, wood splints, papers coiled in various ways". It

8911-662: The breakup of ice on the St. Lawrence River and the arrival of British transports in May and June. There would be no further serious attempt to challenge British control of present-day Canada until the War of 1812 . In 1777, 1,500 Loyalist militia took part in the Saratoga campaign in New York, and surrendered with General Burgoyne after the Battles of Saratoga in October. For the rest of

9044-428: The competing companies and the idea of a merger was being put forward in financial circles. The War of Currents ended in 1892 when the financier J.P. Morgan engineered a merger of Edison General Electric with its main alternating current based rival, The Thomson-Houston Company, that put the board of Thomson-Houston in charge of the new company called General Electric . General Electric now controlled three-quarters of

9177-591: The cost of interior furnishings. Edison and Mina spent many winters at their home in Fort Myers, and Edison tried to find a domestic source of natural rubber. Due to the security concerns around World War I , Edison suggested forming a science and industry committee to provide advice and research to the US military, and he headed the Naval Consulting Board in 1915. Edison became concerned with America's reliance on foreign supply of rubber and

9310-436: The critical parameters of his electric lighting system including lamp resistance by an analysis of Ohm's law , Joule's law and economics. Nearly all of Edison's patents were utility patents, which were protected for 17 years and included inventions or processes that are electrical, mechanical, or chemical in nature. About a dozen were design patents , which protect an ornamental design for up to 14 years. As in most patents,

9443-521: The disgust of the Radical Whigs the moderate Whigs were advertising in New York newspapers in 1782–83 that Tories who would make no trouble would be welcome on the grounds that their skills and money would help the State's economy. The Moderates prevailed. All anti-Tory laws were repealed in early 1783 except for the law relating to confiscated Tory estates: "... the problem of the loyalists after 1783

9576-539: The early 1880s, AC arc lighting systems for streets and large spaces had been an expanding business in the US. With the development of transformers in Europe and by Westinghouse Electric in the US in 1885–1886, it became possible to transmit AC long distances over thinner and cheaper wires, and "step down" (reduce) the voltage at the destination for distribution to users. This allowed AC to be used in street lighting and in lighting for small business and domestic customers,

9709-566: The exception of the commanding officer ( Banastre Tarleton ). Both white and black Loyalists fought for the British at the Battle of Kemp's Landing in Virginia. Estimates for how many Loyalists emigrated after the war differ. Historian Maya Jasanoff calculated 60,000 in total went to British North America, including about 50,000 whites, however Philip Ranlet estimates that only 20,000 adult white Loyalists went to Canada, while Wallace Brown cites about 80,000 Loyalists in total permanently left

9842-409: The expropriation of property, but married women were protected under " feme covert ", which meant that they had no political identity and their legal rights were absorbed by their husbands. This created an awkward dilemma for the confiscation committees: confiscating the land of such a woman would punish her for her husband's actions. In many cases, the women did not get a choice on if they were labeled

9975-492: The faction of the George Clinton . Most States had rescinded anti-Tory laws by 1787, although the accusation of being a Tory was heard for another generation. Several hundred who had left for Florida returned to Georgia in 1783–84. South Carolina which had seen a bitter bloody internal civil war in 1780–82 adopted a policy of reconciliation that proved more moderate than any other state. About 4500 white Loyalists left when

10108-556: The fall of 1775 was followed by a rapid rise in Patriot recruiting. In what became known as the Snow Campaign , partisan militia arrested or drove out most of the back country Loyalist leadership. North Carolina back country Scots and former Regulators joined forces in early 1776, but they were broken as a force at the Battle of Moore's Creek Bridge . By July 4, 1776, the Patriots had gained control of virtually all territory in

10241-421: The former elitism. The Patriot reliance on Catholic France for military, financial and diplomatic aid led to a sharp drop in anti-Catholic rhetoric. Indeed, the king replaced the pope as the demon Patriots had to fight against. Anti-Catholicism remained strong among Loyalists, some of whom went to Canada after the war most remained in the new nation. By the 1780s, Catholics were extended legal toleration in all of

10374-610: The goal of convincing the residents of Quebec to join the Revolution. Although only a minority of Canadians openly expressed loyalty to King George, about 1,500 militia fought for the King in the Siege of Fort St. Jean . In the region south of Montreal that was occupied by the Continentals, some inhabitants supported the rebellion and raised two regiments to join the Patriot forces. In Nova Scotia , there were many Yankee settlers originally from New England, and they generally supported

10507-482: The incandescent electric lamp and was put in charge of tests and records on that device. In 1880, he was appointed chief engineer of the Edison Lamp Works. In his first year, the plant under general manager Francis Robbins Upton turned out 50,000 lamps. According to Edison, Hammer was "a pioneer of incandescent electric lighting". Frank J. Sprague , a competent mathematician and former naval officer ,

10640-627: The influx was greatest in Halifax. Britain in any case built up powerful forces at the naval base of Halifax after the failure of Jonathan Eddy to capture Fort Cumberland in 1776. Although the Continentals captured Montreal in November 1775, they were turned back a month later at Quebec City by a combination of the British military under Governor Guy Carleton , the difficult terrain and weather, and an indifferent local response. The Continental forces would be driven from Quebec in 1776, after

10773-408: The inventions he described were improvements over prior art . The phonograph patent, in contrast, was unprecedented in describing the first device to record and reproduce sounds. In just over a decade, Edison's Menlo Park laboratory had expanded to occupy two city blocks. Edison said he wanted the lab to have "a stock of almost every conceivable material". A newspaper article printed in 1887 reveals

10906-445: The largest First Nations reserve in Canada. (The remainder, under the leadership of Cornplanter (John Abeel) and members of his family, stayed in New York.) A group of African-American Loyalists settled in Nova Scotia but emigrated again for Sierra Leone after facing discrimination there. Many of the Loyalists were forced to abandon substantial properties to America restoration of or compensation for these lost properties, which

11039-567: The largest free black community in North America. However, the long period of waiting time to be officially given land grants that were given to them and the prejudices of white Loyalists in nearby Shelburne who regularly harassed the settlement in events such as the Shelburne Riots in 1784, made life very difficult for the community. In 1791 the Sierra Leone Company offered to transport dissatisfied black Loyalists to

11172-498: The latter preoccupation cost him his job. One night in 1867, he was working with a lead–acid battery when he spilt sulfuric acid onto the floor. It ran between the floorboards and onto his boss's desk below. The next morning Edison was fired. His first patent was for the electric vote recorder, U.S. patent 90,646 , which was granted on June 1, 1869. Finding little demand for the machine, Edison moved to New York City shortly thereafter. One of his mentors during those early years

11305-442: The link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Edison_Bridge&oldid=932807799 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Thomas Edison Thomas Alva Edison (February 11, 1847 – October 18, 1931)

11438-440: The list goes on. Over his desk Edison displayed a placard with Sir Joshua Reynolds ' famous quotation: "There is no expedient to which a man will not resort to avoid the real labor of thinking." This slogan was reputedly posted at several other locations throughout the facility. In Menlo Park, Edison had created the first industrial laboratory concerned with creating knowledge and then controlling its application. Edison's name

11571-544: The local Patriots, who controlled local and state government. Many people—including former Regulators in North Carolina —refused to join the rebellion, as they had earlier protested against corruption by local authorities who later became Revolutionary leaders. The oppression by the local Whigs during the Regulation led to many of the residents of backcountry North Carolina sitting out the Revolution or siding with

11704-468: The market Edison's patented low voltage DC incandescent lamp system was designed to supply. Edison's DC empire suffered from one of its chief drawbacks: it was suitable only for the high density of customers found in large cities. Edison's DC plants could not deliver electricity to customers more than one mile from the plant, and left a patchwork of unsupplied customers between plants. Small cities and rural areas could not afford an Edison style system, leaving

11837-680: The members of the Vanderbilt family . Edison made the first public demonstration of his incandescent light bulb on December 31, 1879, in Menlo Park. It was during this time that he said: "We will make electricity so cheap that only the rich will burn candles." Henry Villard , president of the Oregon Railroad and Navigation Company , attended Edison's 1879 demonstration. Villard was impressed and requested Edison install his electric lighting system aboard Villard's company's new steamer,

11970-463: The mouth of the Hudson River until 1783. British forces seized control of other cities, including Philadelphia (1777), Savannah, Georgia (1778–83), and Charleston, South Carolina (1780–82). But 90% of the colonial population lived outside the cities, with the effective result that Congress represented 80 to 90 percent of the population. The British removed their governors from colonies where

12103-569: The names of African Americans who had supported the British in a document called the Book of Negroes , which granted freedom to slaves who had escaped and assisted the British. About 4,000 Black Loyalists went to the British colonies of Nova Scotia and New Brunswick , where they were promised land grants. They founded communities across the two provinces, many of which still exist today. Over 2,500 settled in Birchtown, Nova Scotia , instantly making it

12236-535: The nascent colony of Sierra Leone in West Africa, with the promise of better land and more equality. About 1,200 left Nova Scotia for Sierra Leone, where they named the capital Freetown . After 1787 they became Sierra Leone's ruling elite during the colonial era and their descendants, the Sierra Leone Creoles , are the cultural elites of the nation. About 400 to 1,000 free blacks who joined

12369-587: The nature of Loyalist support as follows: The largest number of loyalists were found in the middle colonies : many tenant farmers of New York supported the king , for example, as did many of the Dutch in the colony and in New Jersey . The Germans in Pennsylvania tried to stay out of the Revolution, just as many Quakers did, and when that failed, clung to the familiar connection rather than embrace

12502-643: The new. Highland Scots in the Carolinas , a fair number of Anglican clergy and their parishioners in Connecticut and New York , a few Presbyterians in the southern colonies , and a large number of the Iroquois stayed loyal to the king. After the British military capture of New York City and Long Island it became the British military and political base of operations in North America from 1776 to 1783, prompting revolutionaries to flee and resulting in

12635-470: The old inhabitants of Nova Scotia, who are even more disaffected towards the British Government than any of the new States ever were. This makes me much doubt their remaining long dependent." In response, the colony of New Brunswick , until 1784 part of Nova Scotia, was created for the 14,000 who had settled in those parts. Of the 46,000 who went to Canada, 10,000 went to Quebec, especially what

12768-422: The other. It is alleged that Edison would listen to a music player or piano by clamping his teeth into the wood to absorb the sound waves into his skull. As he got older, Edison believed his hearing loss allowed him to avoid distraction and concentrate more easily on his work. Modern-day historians and medical professionals have suggested he may have had ADHD . It is known that early in his career he enrolled in

12901-423: The phonograph before the National Academy of Sciences, Congressmen, Senators and President Hayes . The Washington Post described Edison as a " genius " and his presentation as "a scene... that will live in history". Although Edison obtained a patent for the phonograph in 1878, he did little to develop it until Alexander Graham Bell , Chichester Bell , and Charles Tainter produced a phonograph-like device in

13034-426: The physics of loose-contact carbon transmitters (work that Hughes did not bother to patent). Edison used the carbon microphone concept in 1877 to create an improved telephone for Western Union . In 1886, Edison found a way to improve a Bell Telephone microphone, one that used loose-contact ground carbon, with his discovery that it worked far better if the carbon was roasted . This type was put in use in 1890 and

13167-614: The principles of organized science and teamwork to the process of invention, working with many researchers and employees. He established the first industrial research laboratory . Edison was raised in the American Midwest . Early in his career he worked as a telegraph operator , which inspired some of his earliest inventions. In 1876, he established his first laboratory facility in Menlo Park, New Jersey , where many of his early inventions were developed. He later established

13300-409: The principles of the revolution. The allegiance toward the rebellion waned as American privateers raided Nova Scotia communities throughout the war. As well, the Nova Scotia government used the law to convict people for sedition and treason for supporting the rebel cause. There was also the influence of an influx of recent immigration from the British isles, and they remained neutral during the war, and

13433-437: The project, while Edison did all the research. Edison, however, wished to contribute $ 25,000 as well. Edison did the majority of the research and planting, sending results and sample rubber residues to his West Orange Lab. Edison employed a two-part Acid-base extraction , to derive latex from the plant material after it was dried and crushed to a powder. After testing 17,000 plant samples, he eventually found an adequate source in

13566-656: The refugees to New Brunswick returned to the States as did an unknown number from Nova Scotia. Some Massachusetts Tories settled in the Maine District . Nevertheless, the vast majority never returned. Captain Benjamin Hallowell, who as Mandamus Councilor in Massachusetts served as the direct representative of the Crown, was considered by the insurgents as one of the most hated men in the Colony, but as

13699-481: The sales of electric power systems in general. The primary reason was that Edison Electric based their design on low voltage DC, and switching a standard after they had installed over 100 systems was, in Edison's mind, out of the question. By the end of 1887, Edison Electric was losing market share to Westinghouse, who had built 68 AC-based power stations to Edison's 121 DC-based stations. To make matters worse for Edison,

13832-452: The seemingly greedy and callous lighting companies that used it. Edison took advantage of the public perception of AC as dangerous, and joined with self-styled New York anti-AC crusader Harold P. Brown in a propaganda campaign, aiding Brown in the public electrocution of animals with AC, and supported legislation to control and severely limit AC installations and voltages (to the point of making it an ineffective power delivery system) in what

13965-457: The seriousness of his claim, stating the lab contained "eight thousand kinds of chemicals, every kind of screw made, every size of needle, every kind of cord or wire, hair of humans, horses, hogs, cows, rabbits, goats, minx, camels ... silk in every texture, cocoons, various kinds of hoofs, shark's teeth, deer horns, tortoise shell ... cork, resin, varnish and oil, ostrich feathers, a peacock's tail, jet, amber, rubber, all ores ..." and

14098-434: The signal so generated to the telephone line. Edison was one of many inventors working on the problem of creating a usable microphone for telephony by having it modulate an electric current passed through it. His work was concurrent with Emile Berliner 's loose-contact carbon transmitter (who lost a later patent case against Edison over the carbon transmitter's invention ) and David Edward Hughes ’ study and published paper on

14231-559: The slaves in the South joined the Loyalists with intentions of gaining freedom and escaping the South. About 800 did so; some helped rout the Virginia militia at the Battle of Kemp's Landing and fought in the Battle of Great Bridge on the Elizabeth River , wearing the motto "Liberty to Slaves", but this time they were defeated. The remains of their regiment were then involved in the evacuation of Norfolk , after which they served in

14364-533: The total US population of 3 million at the end of the war in 1783. After 1783 some former Loyalists, especially Germans from Pennsylvania, emigrated to Canada to take advantage of the British government's offer of free land. Many departed the fledgling United States because they faced continuing hostility. In another migration-motivated mainly by economic rather than political reasons- more than 20,000 and perhaps as many as 30,000 "Late Loyalists" arrived in Ontario in

14497-417: The varying resistance results in a modulation of the current, creating a varying electric current that reproduces the varying pressure of the sound wave. Up to that point, microphones, such as the ones developed by Johann Philipp Reis and Alexander Graham Bell , worked by generating a weak current. The carbon microphone works by modulating a direct current and, subsequently, using a transformer to transfer

14630-441: The war ended, but the majority remained behind. The state government successfully and quickly reincorporated the vast majority. During the war, pardons were offered to Loyalists who switched sides and joined the Patriot forces. Others were required to pay a 10% fine of the value of the property. The legislature named 232 Loyalists liable for the confiscation of their property, but most appealed and were forgiven. In Connecticut much to

14763-493: The war, Quebec acted as a base for raiding expeditions, conducted primarily by Loyalists and Indians, against frontier communities. The Loyalists rarely attempted any political organization. They were often passive unless regular British army units were in the area. The British, however, assumed a highly activist Loyalist community was ready to mobilize and planned much of their strategy around raising Loyalist regiments. The British provincial line, consisting of Americans enlisted on

14896-448: The white populace, and at most no more than a bare majority. Before Calhoon's work, estimates of the Loyalist share of the population were somewhat higher, at about one-third, but these estimates are now rejected as too high by most scholars. In 1968 historian Paul H. Smith estimated there were about 400,000 Loyalists, or 16% of the white population of 2.25 million in 1780. Historian Robert Middlekauff summarized scholarly research on

15029-627: Was a fellow telegrapher and inventor named Franklin Leonard Pope , who allowed the impoverished youth to live and work in the basement of his Elizabeth, New Jersey , home, while Edison worked for Samuel Laws at the Gold Indicator Company. Pope and Edison founded their own company in October 1869, working as electrical engineers and inventors. Edison began developing a multiplex telegraphic system, which could send two messages simultaneously, in 1874. Edison's major innovation

15162-527: Was a major issue during the negotiation of the Jay Treaty in 1794. Two successive boards were formed, and under a new convention signed in 1802 by the United States and Great Britain for the mutual payment of claims, the US paid the sum of £600,000, while only £1,420,000 of nearly £5 million in claims considered by commissioners in Britain were judged to be good. The great majority of Loyalists never left

15295-419: Was an American inventor and businessman. He developed many devices in fields such as electric power generation , mass communication , sound recording , and motion pictures. These inventions, which include the phonograph , the motion picture camera , and early versions of the electric light bulb , have had a widespread impact on the modern industrialized world . He was one of the first inventors to apply

15428-681: Was at Stratford Junction, Ontario, on the Grand Trunk Railway . He also studied qualitative analysis and conducted chemical experiments until he left the job rather than be fired after being held responsible for a near collision of two trains. Edison obtained the exclusive right to sell newspapers on the road, and, with the aid of four assistants, he set in type and printed the Grand Trunk Herald , which he sold with his other papers. This began Edison's long streak of entrepreneurial ventures, as he discovered his talents as

15561-856: Was born in 1847 in Milan, Ohio , but grew up in Port Huron, Michigan , after the family moved there in 1854. He was the seventh and last child of Samuel Ogden Edison Jr. (1804–1896, born in Marshalltown, Nova Scotia ) and Nancy Matthews Elliott (1810–1871, born in Chenango County, New York ). His patrilineal family line was Dutch by way of New Jersey ; the surname had originally been "Edeson". His great-grandfather, loyalist John Edeson, fled New Jersey for Nova Scotia in 1784. The family moved to Middlesex County, Upper Canada , around 1811, and his grandfather, Capt. Samuel Edison Sr. served with

15694-735: Was defeated, about 15 percent of the Loyalists (65,000–70,000 people) fled to other parts of the British Empire ; especially to the Kingdom of Great Britain itself, or to British North America (present day Canada ). The southern Loyalists moved mostly to Florida , which had remained loyal to the Crown, and to British Caribbean possessions. Northern Loyalists largely migrated to Ontario , Quebec , New Brunswick , and Nova Scotia . They called themselves United Empire Loyalists . Most were compensated with Canadian land or British cash distributed through formal claims procedures. Loyalists who left

15827-521: Was determined to find a native supply of rubber. Edison's work on rubber took place largely at his research laboratory in Fort Myers, which has been designated as a National Historic Chemical Landmark. The laboratory was built after Thomas Edison, Henry Ford, and Harvey S. Firestone pulled together $ 75,000 to form the Edison Botanical Research Corporation. Initially, only Ford and Firestone were to contribute funds to

15960-467: Was exposed to a poisonous dose of radiation; he later died (at the age of 39) of injuries related to the exposure, including mediastinal cancer. In 1903, a shaken Edison said: "Don't talk to me about X-rays, I am afraid of them." Nonetheless, his work was important in the development of a technology still used today. Edison invented a highly sensitive device, that he named the tasimeter , which measured infrared radiation . His impetus for its creation

16093-455: Was generally told to carry out his directions in conducting research, and he drove them hard to produce results. William Joseph Hammer , a consulting electrical engineer , started working for Edison and began his duties as a laboratory assistant in December 1879. He assisted in experiments on the telephone, phonograph, electric railway, iron ore separator , electric lighting , and other developing inventions. However, Hammer worked primarily on

16226-634: Was later called Seminole Lodge as a winter retreat. The main house and guest house are representative of Italianate architecture and Queen Anne style architecture . The building materials were pre-cut in New England by the Kennebec Framing Company and the Stephen Nye Lumber Company of Fairfield Maine. The materials were then shipped down by boat and were constructed at a cost of $ 12,000 each, which included

16359-476: Was not until several months after the patent was granted that Edison and his team discovered that a carbonized bamboo filament could last over 1,200 hours. Attempts to prevent blackening of the bulb due to emission of charged carbon from the hot filament culminated in Edison effect bulbs, which redirected and controlled the mysterious unidirectional current. Edison's 1883 patent for voltage-regulating

16492-563: Was now being referred to as a " war of the currents ". The development of the electric chair was used in an attempt to portray AC as having a greater lethal potential than DC and smear Westinghouse, via Edison colluding with Brown and Westinghouse's chief AC rival, the Thomson-Houston Electric Company, to ensure the first electric chair was powered by a Westinghouse AC generator. Edison was becoming marginalized in his own company having lost majority control in

16625-495: Was recruited by Edward H. Johnson and joined the Edison organization in 1883. One of Sprague's contributions to the Edison Laboratory at Menlo Park was to expand Edison's mathematical methods. Despite the common belief that Edison did not use mathematics, analysis of his notebooks reveal that he was an astute user of mathematical analysis conducted by his assistants such as Francis Robbins Upton, for example, determining

16758-419: Was resolved in their favor after the War of Independence ended." In 1787 the last of any discriminatory laws were rescinded. The departure of so many royal officials, rich merchants and landed gentry destroyed the hierarchical networks that had dominated most of the colonies. A major result was that a Patriot/Whig elite supplanted royal officials and affluent Tories. In New York, the departure of key members of

16891-472: Was seized by the Rebels and she spent the rest of her life fighting to regain it. It was returned to her heirs in 1783, after she and her husband had died. Patriots allowed women to become involved in politics in a larger scale than the loyalists. Some women involved in political activity include Catharine Macaulay (a loyalist) and Mercy Otis Warren who were both writers during this time. Both women maintained

17024-580: Was switched on, providing 110 volts direct current (DC), initially to 59 customers in lower Manhattan , quickly growing to 508 customers with 10,164 lamps. The power station was decommissioned in 1895. Eight months earlier in January 1882, to demonstrate feasibility, Edison had switched on the 93 kW first steam-generating power station at Holborn Viaduct in London. This was a smaller 110 V DC supply system, eventually supplying 3,000 street lights and

17157-512: Was the desire to measure the heat from the solar corona during the total Solar eclipse of July 29, 1878 . The device was not patented since Edison could find no practical mass-market application for it. Loyalist (American Revolution) Prominent Loyalists repeatedly assured the British government that many thousands of them would spring to arms and fight for the Crown. The British government acted in expectation of that, especially during

17290-488: Was the establishment of an industrial research lab in 1876. It was built in Menlo Park , a part of Raritan Township (now named Edison Township in his honor) in Middlesex County, New Jersey , with the funds from the sale of Edison's quadruplex telegraph . After his demonstration of the telegraph, Edison was not sure that his original plan to sell it for $ 4,000 to $ 5,000 was right, so he asked Western Union to make

17423-626: Was then frequently called "Canada", the name of the earlier French province ) in the months leading to the outbreak of active hostilities. John Brown , an agent of the Boston Committee of Correspondence , worked with Canadian merchant Thomas Walker and other rebel sympathisers during the winter of 1774–1775 to convince inhabitants to support the actions of the First Continental Congress . However, many of Quebec's inhabitants remained neutral, resisting service to either

17556-527: Was used in all telephones along with the Bell receiver until the 1980s. In 1878, Edison began working on a system of electrical illumination, something he hoped could compete with gas and oil-based lighting. He began by tackling the problem of creating a long-lasting incandescent lamp, something that would be needed for indoor use. However, Thomas Edison did not invent the light bulb. In 1840, British scientist Warren de la Rue developed an efficient light bulb using

17689-460: Was valid. To avoid a possible court battle with yet another competitor, Joseph Swan , who held an 1880 British patent on a similar incandescent electric lamp, he and Swan formed a joint company called Ediswan to manufacture and market the invention in Britain. The incandescent light bulb patented by Edison also began to gain widespread popularity in Europe as well. Mahen Theatre in Brno (in what

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