Edison, c. 1922
Thomas Alva Edison
February 11, 1847
Milan, Ohio, U.S.
|Died||October 18, 1931 84) (aged|
West Orange, New Jersey, U.S.
|Burial place||Thomas Edison National Historical Park|
|Relatives||Lewis Miller (father-in-law)|
Thomas Alva Edison (February 11, 1847 –October 18, 1931) was an American inventor and businessman, who has been described as America's greatest inventor. He is credited with developing 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 the long-lasting, practical electric light bulb, had a widespread impact on the modern industrialized world. He was one of the first inventors to apply the principles of mass production and teamwork to the process of invention, working with many researchers and employees. He is often credited with establishing the first industrial research laboratory.
An inventor is a person who creates or discovers a new method, form, device or other useful means that becomes known as an invention. The word inventor comes from the Latin verb invenire, invent-, to find. The system of patents was established to encourage inventors by granting limited-term, limited monopoly on inventions determined to be sufficiently novel, non-obvious, and useful. Although inventing is closely associated with science and engineering, inventors are not necessarily engineers nor scientists.
Mass communication is the study of how people exchange their information through mass media to large segments of the population at the same time with an amazing speed. In other words, mass communication refers to imparting and exchanging information on a large scale to a wide range of people. It is usually understood for relating newspaper, magazine, and book publishing, as well as radio, television and film, even via internet as these mediums are used for disseminating information, news and advertising. Mass communication differs from the studies of other forms of communication, such as interpersonal communication or organizational communication, in that it focuses on a single source transmitting information to a large number of receivers. The study of mass communication is chiefly concerned with how the content of mass communication persuades or otherwise affects the behavior, the attitude, opinion, or emotion of the person or people receiving the information.
The phonograph is a device for the mechanical recording and reproduction of sound. In its later forms, it is also called a gramophone or, since the 1940s, a record player. The sound vibration waveforms are recorded as corresponding physical deviations of a spiral groove engraved, etched, incised, or impressed into the surface of a rotating cylinder or disc, called a "record". To recreate the sound, the surface is similarly rotated while a playback stylus traces the groove and is therefore vibrated by it, very faintly reproducing the recorded sound. In early acoustic phonographs, the stylus vibrated a diaphragm which produced sound waves which were coupled to the open air through a flaring horn, or directly to the listener's ears through stethoscope-type earphones.
Edison was raised in the American Midwest and 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 would be developed. He would later establish a botanic laboratory in Fort Myers, Florida in collaboration with businessmen Henry Ford and Harvey Firestone, and a laboratory in West Orange, New Jersey that featured the world's first film studio, the Black Maria. He was a prolific inventor, holding 1,093 US patents in his name, as well as patents in other countries. Edison married twice and fathered six children. He died in 1931 of complications of diabetes.
Menlo Park is an unincorporated community located within Edison Township in Middlesex County, New Jersey, United States.
Botany, also called plant science(s), plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek word βοτάνη (botanē) meaning "pasture", "grass", or "fodder"; βοτάνη is in turn derived from βόσκειν (boskein), "to feed" or "to graze". Traditionally, botany has also included the study of fungi and algae by mycologists and phycologists respectively, with the study of these three groups of organisms remaining within the sphere of interest of the International Botanical Congress. Nowadays, botanists study approximately 410,000 species of land plants of which some 391,000 species are vascular plants, and approximately 20,000 are bryophytes.
Fort Myers or Ft. Myers, is the county seat and commercial center of Lee County, Florida, United States. It has grown rapidly in recent years. As of the 2010 census, the city population was 62,298 and in 2017 was estimated at 79,943.
Thomas Edison was born, in 1847, 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) and Nancy Matthews Elliott (1810–1871, born in Chenango County, New York).His father, the son of a Loyalist refugee, had moved as a boy with the family from Nova Scotia, settling in southwestern Ontario (then called Upper Canada), in a village known as Shewsbury, later Vienna, by 1811. Samuel Jr. eventually fled Ontario, because he took part in the unsuccessful Mackenzie Rebellion of 1837. His father, Samuel Sr., had earlier fought in the War of 1812 as captain of the First Middlesex Regiment. By contrast, Samuel Jr.'s struggle found him on the losing side, and he crossed into the United States at Sarnia-Port Huron. Once across the border, he found his way to Milan, Ohio. His patrilineal family line was Dutch by way of New Jersey; the surname had originally been "Edeson."
Milan is a village in Erie and Huron counties in the U.S. state of Ohio. The population was 1,367 at the 2010 census. It is best known as the birthplace of Thomas Edison.
Port Huron is a city in the U.S. state of Michigan and the county seat of St. Clair County. The population was 30,184 at the 2010 census. The city is adjacent to Port Huron Township but is administratively autonomous.
Marshalltown is a rural community located just west of Digby, on Digby Neck, an isthmus of Nova Scotia, Canada, between the Bay of Fundy and Saint Mary's Bay. There was once an almshouse and poor farm. Marshalltown was the birthplace of Samuel Edison, father of Thomas Edison (1847-1931), and it was also the home of folk artist Maud Lewis (1903-1970) from 1938 until her death. Her small decorated house is preserved at the Art Gallery of Nova Scotia in Halifax while a steel memorial sculpture inspired by the house has been erected at the original site in Marshalltown. A replica of the house and interior is located a few kilometres north of Marshalltown on the road to Digby Neck.
Edison only attended school for a few months and was instead taught by his mother.Much of his education came from reading R.G. Parker's School of Natural Philosophy and The Cooper Union for the Advancement of Science and Art.
School of Natural Philosophy is a scientific textbook by Richard Green Parker. It is credited with inspiring the inventor Thomas Edison.
Edison developed hearing problems at an early age. The cause of his deafness has been attributed to a bout of scarlet fever during childhood and recurring untreated middle-ear infections. Around the middle of his career, Edison attributed the hearing impairment to being struck on the ears by a train conductor when his chemical laboratory in a boxcar caught fire and he was thrown off the train in Smiths Creek, Michigan, along with his apparatus and chemicals. In his later years, he modified the story to say the injury occurred when the conductor, in helping him onto a moving train, lifted him by the ears.
Scarlet fever is a disease which can occur as a result of a group A Streptococcus infection. The signs and symptoms include a sore throat, fever, headaches, swollen lymph nodes, and a characteristic rash. The rash is red and feels like sandpaper and the tongue may be red and bumpy. It most commonly affects children between five and 15 years of age.
Edison's family moved to Port Huron, Michigan, after the canal owners successfully kept the railroad out of Milan Ohio in 1854 and business declined.Edison sold candy and newspapers on trains running from Port Huron to Detroit, and sold vegetables. He became a telegraph operator after he saved three-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 was at Stratford Junction, Ontario, on the Grand Trunk Railway. He was held responsible for a near collision. He also studied qualitative analysis and conducted chemical experiments on the train until he left the job.
The station master is the person in charge of a railway station, particularly in the United Kingdom and many other countries outside North America. In the United Kingdom, where the term originated, it is now largely historical or colloquial, with the contemporary term being station manager. However, the term station master remains current on many heritage railways, and also in many countries outside the United Kingdom, notably the extensive Indian Railways network.
Mount Clemens is a city in the U.S. state of Michigan. The population was 16,314 at the 2010 census. It is the county seat of Macomb County.
The Grand Trunk Railway was a railway system that operated in the Canadian provinces of Quebec and Ontario and in the American states of Connecticut, Maine, Michigan, Massachusetts, New Hampshire, and Vermont. The railway was operated from headquarters in Montreal, Quebec, with corporate headquarters in London, England. It cost an estimated $160 million to build. The Grand Trunk, its subsidiaries, and the Canadian Government Railways were precursors of today's Canadian National Railways.
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 a businessman. These talents eventually led him to found 14 companies, including General Electric, still 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, the latter pre-occupation cost him his job. One night in 1867, he was working with a lead–acid battery when he spilled 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 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 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 a bid. He was surprised to hear them offer $10,000 ($221,400 in today's dollars. ), 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 attributed with most of the inventions produced there, though many employees carried out research and development under his direction. His staff 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 the incandescent electric lamp and was put in charge of tests and records on that device (see Hammer Historical Collection of Incandescent Electric Lamps). 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, 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 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 a 17-year period 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 a 14-year period. As in most patents, the inventions he described were improvements over prior art. The phonograph patent, in contrast, was unprecedented as 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". ... 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 the list goes on.A newspaper article printed in 1887 reveals 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
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.
With Menlo Park, Edison had created the first industrial laboratory concerned with creating knowledge and then controlling its application.Edison's name 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," New Jersey.
His first phonograph recorded on tinfoil around 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 the phonograph before the National Academy of Sciences, Congressmen, Senators and US 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 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 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 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 electrical 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 transmitters invention ) and David Edward Hughes study and published paper on 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 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. 217–218 Edison realized that to connect a series of electric lights to an economically manageable size and using the necessary thickness of copper wire, he would have to develop a lamp that used a low amount of current. This lamp must have high resistance and use relatively low voltage (around 110 volts).He began by tackling the problem of creating a long-lasting incandescent lamp, something that would be needed for indoor use. Many earlier inventors had previously 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. Some of these early bulbs had such flaws as an extremely short life, high expense to produce, and high electric current drawn, making them difficult to apply on a large scale commercially. :
After many experiments, first with carbon filaments and then with platinum and other metals, Edison returned to a carbon filament. 186 it lasted 13.5 hours. Edison continued 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". This was the first commercially practical incandescent light.The first successful test was on October 22, 1879; :
Although the patent described several ways of creating the carbon filament including "cotton and linen thread, wood splints, papers coiled in various ways", hours. The idea of using this particular raw material originated from Edison's recalling his examination of a few threads from a bamboo fishing pole while relaxing on the shore of Battle Lake in the present-day state of Wyoming, where he and other members of a scientific team had traveled so that they could clearly observe a total eclipse of the sun on July 29, 1878, from the Continental Divide.it was not until several months after the patent was granted that Edison and his team discovered a carbonized bamboo filament that could last over 1,200
In 1878, Edison formed the Edison Electric Light Company in New York City with several financiers, including J. P. Morgan, Spencer Trask,and 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, 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.
Lewis Latimer joined the Edison Electric Light Company in 1884. Latimer had received a patent in January 1881 for the "Process of Manufacturing Carbons", an improved method for the production of carbon filaments for light bulbs. Latimer worked as an engineer, a draftsman and an expert witness in patent litigation on electric lights.
George Westinghouse's company bought Philip Diehl's competing induction lamp patent rights (1882) for $25,000, forcing the holders of the Edison patent to charge a lower rate for the use of the Edison patent rights and lowering the price of the electric lamp.
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, until October 6, 1889, when a judge ruled that Edison's electric light improvement claim for "a filament of carbon of high resistance" was valid.To avoid a possible court battle with Joseph Swan, whose British patent had been awarded a year before Edison's, he and Swan formed a joint company called Ediswan to manufacture and market the invention in Britain.
Mahen Theatre in Brno (in what 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 theatre.
After devising 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 in 1882 on Pearl Street Station, New York City. On September 4, 1882, Edison switched on his Pearl Street generating station's electrical power distribution system, which provided 110 volts direct current (DC) to 59 customers in lower Manhattan.
In January 1882, Edison switched on the first steam-generating power station at Holborn Viaduct in London. The DC supply system provided electricity supplies to street lamps and several private dwellings within a short distance of the station. 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 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" 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, 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 at all, leaving 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 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 the sales of electric power systems in general. Primary was the fact 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, 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 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 was now being referred to as a "battle of 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 at the same time via Edison colluding with Brown and Westinghouse's chief AC rival, the Thomson-Houston Electric Company, to make sure the first electric chair was powered by a Westinghouse AC generator.
Thomas Edison's staunch anti-AC tactics were not sitting well with his own stockholders. By the early 1890s, Edison's company was generating much smaller profits than its AC rivals, and the War of Currents would come to an end in 1892 with Edison forced out of controlling his own company. That year, the financier J.P. Morgan engineered a merger of Edison General Electric with Thomson-Houston that put the board of Thomson-Houston in charge of the new company called General Electric. General Electric now controlled three-quarters of the US electrical business and would compete with Westinghouse for the AC market.
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 property in Fort Myers, Florida, and built what was later called Seminole Lodge as a winter retreat. 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 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 Firestone pulled together $75,000 to form the Edison Botanical Research Corporation. Initially, only Ford and Firestone were to contribute funds to 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 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 didn't have 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 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 was exposed to a poisonous dose of radiation. He later died of injuries related to the exposure. In 1903, a shaken Edison said: "Don't talk to me about X-rays, I am afraid of them."
Edison invented a highly sensitive device, that he named the tasimeter, which measured infrared radiation. His impetus for its creation was the desire to measure the heat from the solar corona during the total Solar eclipse of July 29, 1878.
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The key to Edison's fortunes was telegraphy. With knowledge gained from years of working as a telegraph operator, he learned the basics of electricity. This allowed him to make his early fortune with the stock ticker, the first electricity-based broadcast system. On August 9, 1892, Edison received a patent for a two-way telegraph.
Edison was also granted a patent for the motion picture camera or "Kinetograph". He did the electromechanical design while his employee W. K. L. Dickson, a photographer, worked on the photographic and optical development. Much of the credit for the invention belongs to Dickson.In 1891, Thomas Edison built a Kinetoscope or peep-hole viewer. This device was installed in penny arcades, where people could watch short, simple films. The kinetograph and kinetoscope were both first publicly exhibited May 20, 1891.
In April 1896, Thomas Armat's Vitascope, manufactured by the Edison factory and marketed in Edison's name, was used to project motion pictures in public screenings in New York City. Later, he exhibited motion pictures with voice soundtrack on cylinder recordings, mechanically synchronized with the film.
Officially the kinetoscope entered Europe when the rich American Businessman Irving T. Bush (1869–1948) bought from the Continental Commerce Company of Frank Z. Maguire and Joseph D. Baucus a dozen machines. Bush placed from October 17, 1894, the first kinetoscopes in London. At the same time, the French company Kinétoscope Edison Michel et Alexis Werner bought these machines for the market in France. In the last three months of 1894, the Continental Commerce Company sold hundreds of kinetoscopes in Europe (i.e. the Netherlands and Italy). In Germany and in Austria-Hungary, the kinetoscope was introduced by the Deutsche-österreichische-Edison-Kinetoscop Gesellschaft, founded by the Ludwig Stollwerckof the Schokoladen-Süsswarenfabrik Stollwerck & Co of Cologne.
The first kinetoscopes arrived in Belgium at the Fairs in early 1895. The Edison's Kinétoscope Français, a Belgian company, was founded in Brussels on January 15, 1895, with the rights to sell the kinetoscopes in Monaco, France and the French colonies. The main investors in this company were Belgian industrialists.
On May 14, 1895, the Edison's Kinétoscope Belge was founded in Brussels. The businessman Ladislas-Victor Lewitzki, living in London but active in Belgium and France, took the initiative in starting this business. He had contacts with Leon Gaumont and the American Mutoscope and Biograph Co. In 1898, he also became a shareholder of the Biograph and Mutoscope Company for France.
Edison's film studio made close to 1,200 films. The majority of the productions were short films showing everything from acrobats to parades to fire calls including titles such as Fred Ott's Sneeze (1894), The Kiss (1896), The Great Train Robbery (1903), Alice's Adventures in Wonderland (1910), and the first Frankenstein film in 1910. In 1903, when the owners of Luna Park, Coney Island announced they would execute Topsy the elephant by strangulation, poisoning, and electrocution (with the electrocution part ultimately killing the elephant), Edison Manufacturing sent a crew to film it, releasing it that same year with the title Electrocuting an Elephant .
As the film business expanded, competing exhibitors routinely copied and exhibited each other's films.To better protect the copyrights on his films, Edison deposited prints of them on long strips of photographic paper with the U.S. copyright office. Many of these paper prints survived longer and in better condition than the actual films of that era.
In 1908, Edison started the Motion Picture Patents Company, which was a conglomerate of nine major film studios (commonly known as the Edison Trust). Thomas Edison was the first honorary fellow of the Acoustical Society of America, which was founded in 1929.
Edison said his favorite movie was The Birth of a Nation . He thought that talkies had "spoiled everything" for him. "There isn't any good acting on the screen. They concentrate on the voice now and have forgotten how to act. I can sense it more than you because I am deaf."His favorite stars were Mary Pickford and Clara Bow.
Starting in the late 1870s, Thomas Edison became interested and involved with mining. High-grade iron ore was scarce on the east coast of the United States and Edison tried to mine low-grade ore. Edison developed a process using rollers and crushers that could pulverize rocks up to 10 tons. The dust was then sent between three giant magnets that would pull the iron ore from the dust. Despite the failure of his mining company, the Edison Ore Milling Company, Edison used some of the materials and equipment to produce cement.
In 1901, Edison visited an industrial exhibition in the Sudbury area in Ontario, Canada and thought nickel and cobalt deposits there could be used in his production of electrical equipment. He returned as a mining prospector and is credited with the original discovery of the Falconbridge ore body. His attempts to mine the ore body were not successful, and he abandoned his mining claim in 1903.A street in Falconbridge, as well as the Edison Building, which served as the head office of Falconbridge Mines, are named for him.
The Edison Storage Battery Company was founded in 1901. With this company, Edison exploited his invention of the accumulator. In 1904, 450 people already worked for the company. The first accumulators were produced for electric cars, but there were several defects. Several customers complained about the products. When the capital of the company was spent, Edison paid for the company with his private money. Edison did not demonstrate a mature product until 1910: a nickel-iron-battery with lye as the electrolyte.
At the start of World War I, the American chemical industry was primitive. Most chemicals were imported from Europe. The outbreak of war in August, 1914, resulted in an immediate shortage of imported chemicals. One of particular importance to Edison was phenol, which was used to make phonograph records—presumably as phenolic resins of the Bakelite type.
At the time, phenol came from coal as a by-product of coke oven gases or manufactured gas for gaslighting. Phenol could be nitrated to picric acid and converted to ammonium picrate, a shock resistant high explosive suitable for use in artillery shells. The best telling of the phenol story is found in “The Aspirin Wars.”Most phenol had been imported from Britain, but with war, Parliament blocked exports and diverted most to production of ammonium picrate. Britain also blockaded supplies from Germany.
Edison responded by undertaking production of phenol at his Silver Lake, NJ, facility using processes developed by his chemists.He built two plants with a capacity of six tons of phenol per day. Production began the first week of September, one month after hostilities began in Europe. He built two plants to produce raw material benzene at Johnstown, PA and Bessemer, AL, replacing supplies previously from Germany. Edison also manufactured aniline dyes, which previously had been supplied by the German dye trust. Other wartime products include xylene, p-phenylenediamine, shellac, and pyrax. Wartime shortages made these ventures profitable. In 1915, his production capacity was fully committed by midyear.
Phenol was a critical material because two derivatives were in high growth phases. Bakelite, the original thermoset plastic, had been invented in 1909. Aspirin, too was a phenol derivative. Invented in 1899 had become a block buster drug. Bayer had acquired a plant to manufacture in the US in Rensselaer, NY, but struggled to find phenol to keep their plant running during the war. Edison was able to oblige.
Bayer relied on Chemische Fabrik von Heyden, in Piscataway, NJ, to convert phenol to salicylic acid, which they converted to aspirin. (See Great Phenol plot.) It is said that German companies bought up supplies of phenol to block production of ammonium picrate. Edison preferred not to sell phenol for military uses. He sold his surplus to Bayer, who had it converted to salicylic acid by Heyden, some of which was exported.
Henry Ford, the automobile magnate, later lived a few hundred feet away from Edison at his winter retreat in Fort Myers. Ford once worked as an engineer for the Edison Illuminating Company of Detroit and met Edison at a convention of affiliated Edison illuminating companies in Brooklyn, NY in 1896. Edison was impressed with Ford's internal combustion engine automobile and encouraged its developments. They were friends until Edison's death. Edison and Ford undertook annual motor camping trips from 1914 to 1924. Harvey Firestone and naturalist John Burroughs also participated.
In 1928, Edison joined the Fort Myers Civitan Club. He believed strongly in the organization, writing that "The Civitan Club is doing things—big things—for the community, state, and nation, and I certainly consider it an honor to be numbered in its ranks."He was an active member in the club until his death, sometimes bringing Henry Ford to the club's meetings.
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, New Jersey. Electrical transmission for this service was by means of an overhead catenary system using direct current, which Edison had championed. Despite his frail condition, Edison was at the throttle of the first electric MU (Multiple-Unit) train to depart Lackawanna Terminal in Hoboken in September 1930, driving the train the first mile through Hoboken yard on its way to South Orange.
This fleet of cars would serve commuters in northern New Jersey for the next 54 years until their retirement in 1984. A plaque commemorating Edison's inaugural ride can be seen today in the waiting room of Lackawanna Terminal in Hoboken, which is presently operated by New Jersey Transit.
Edison was said to have been influenced by a popular fad diet in his last few years; "the only liquid he consumed was a pint of milk every three hours".He is reported to have believed this diet would restore his health. However, this tale is doubtful. In 1930, the year before Edison died, Mina said in an interview about him, "correct eating is one of his greatest hobbies." She also said that during one of his periodic "great scientific adventures", Edison would be up at 7:00, have breakfast at 8:00, and be rarely home for lunch or dinner, implying that he continued to have all three.
Edison became the owner of his Milan, Ohio, birthplace in 1906. On his last visit, in 1923, he was reportedly shocked to find his old home still lit by lamps and candles.[ citation needed ]
Edison died of complications of diabetes on October 18, 1931, in his home, "Glenmont" in Llewellyn Park in West Orange, New Jersey, which he had purchased in 1886 as a wedding gift for Mina. Rev. Stephen J. Herben officiated at the funeral;Edison is buried behind the home.
Edison's last breath is reportedly contained in a test tube at The Henry Ford museum near Detroit. Ford reportedly convinced Charles Edison to seal a test tube of air in the inventor's room shortly after his death, as a memento.A plaster death mask and casts of Edison's hands were also made. Mina died in 1947.
On December 25, 1871, at the age of twenty-four, Edison married 16-year-old Mary Stilwell (1855–1884), whom he had met two months earlier; she was an employee at one of his shops. They had three children:
Mary Edison died at age 29 on August 9, 1884, of unknown causes: possibly from a brain tumoror a morphine overdose. Doctors frequently prescribed morphine to women in those years to treat a variety of causes, and researchers believe that her symptoms could have been from morphine poisoning.
Edison generally preferred spending time in the laboratory to being with his family.
On February 24, 1886, at the age of thirty-nine, Edison married the 20-year-old Mina Miller (1865–1947) in Akron, Ohio.She was the daughter of the inventor Lewis Miller, co-founder of the Chautauqua Institution, and a benefactor of Methodist charities. They also had three children together:
Mina outlived Thomas Edison, dying on August 24, 1947.
Wanting to be an inventor, but not having much of an aptitude for it, Thomas Edison's son, Thomas Alva Edison Jr.. became a problem for his father and his father's business. Starting in the 1890s, Thomas Jr. became involved in snake oil products and shady and fraudulent enterprises producing products being sold to the public as "The Latest Edison Discovery". The situation became so bad that Thomas Sr. had to take his son to court to stop the practices, finally agreeing to pay Thomas Jr. an allowance of $35.00 (equivalent to $976in 2018 ) per week, in exchange for not using the Edison name; the son began using aliases, such as Burton Willard. Thomas Jr., suffering from alcoholism, depression and ill health, worked at several menial jobs, but by 1931 (towards the end of his life) he would obtain a role in the Edison company, thanks to the intervention of his brother.
Historian Paul Israel has characterized Edison as a "freethinker".Edison was heavily influenced by Thomas Paine's The Age of Reason . Edison defended Paine's "scientific deism", saying, "He has been called an atheist, but atheist he was not. Paine believed in a supreme intelligence, as representing the idea which other men often express by the name of deity." In 1878, Edison joined the Theosophical Society in New Jersey, but according to its founder, H. P. Blavatsky, he was not a very active member. In an October 2, 1910, interview in the New York Times Magazine , Edison stated:
Nature is what we know. We do not know the gods of religions. And nature is not kind, or merciful, or loving. If God made me—the fabled God of the three qualities of which I spoke: mercy, kindness, love—He also made the fish I catch and eat. And where do His mercy, kindness, and love for that fish come in? No; nature made us—nature did it all—not the gods of the religions.
Edison was accused of being an atheist for those remarks, and although he did not allow himself to be drawn into the controversy publicly, he clarified himself in a private letter:
You have misunderstood the whole article, because you jumped to the conclusion that it denies the existence of God. There is no such denial, what you call God I call Nature, the Supreme intelligence that rules matter. All the article states is that it is doubtful in my opinion if our intelligence or soul or whatever one may call it lives hereafter as an entity or disperses back again from whence it came, scattered amongst the cells of which we are made.
He also stated, "I do not believe in the God of the theologians; but that there is a Supreme Intelligence I do not doubt."
Nonviolence was key to Edison's moral views, and when asked to serve as a naval consultant for World War I, he specified he would work only on defensive weapons and later noted, "I am proud of the fact that I never invented weapons to kill." Edison's philosophy of nonviolence extended to animals as well, about which he stated: "Nonviolence leads to the highest ethics, which is the goal of all evolution. Until we stop harming all other living beings, we are still savages."He was a vegetarian but not a vegan in actual practice, at least near the end of his life.
In 1920, Edison set off a media sensation when he told B. C. Forbes of American Magazine that he was working on a "spirit phone" to allow communication with the dead, a story which other newspapers and magazines repeated.Edison later disclaimed the idea, telling the New York Times in 1926 that "I really had nothing to tell him, but I hated to disappoint him so I thought up this story about communicating with spirits, but it was all a joke."
Thomas Edison was an advocate for monetary reform in the United States. He was ardently opposed to the gold standard and debt-based money. Famously, he was quoted in the New York Times stating "Gold is a relic of Julius Caesar, and interest is an invention of Satan."
In the same article, he expounded upon the absurdity of a monetary system in which the taxpayer of the United States, in need of a loan, can be compelled to pay in return perhaps double the principal, or even greater sums, due to interest. His basic point was that, if the Government can produce debt-based money, it could equally as well produce money that was a credit to the taxpayer.
He thought at length about the subject of money in 1921 and 1922. In May 1922, he published a proposal, entitled "A Proposed Amendment to the Federal Reserve Banking System".In it, he detailed an explanation of a commodity-backed currency, in which the Federal Reserve would issue interest-free currency to farmers, based on the value of commodities they produced. During a publicity tour that he took with friend and fellow inventor, Henry Ford, he spoke publicly about his desire for monetary reform. For insight, he corresponded with prominent academic and banking professionals. In the end, however, Edison's proposals failed to find support and were eventually abandoned.
The President of the Third French Republic, Jules Grévy, on the recommendation of his Minister of Foreign Affairs, Jules Barthélemy-Saint-Hilaire, and with the presentations of the Minister of Posts and Telegraphs, Louis Cochery, designated Edison with the distinction of an Officer of the Legion of Honour (Légion d'honneur) by decree on November 10, 1881;Edison was also named a Chevalier in the Legion in 1879, and a Commander in 1889.
In 1887, Edison won the Matteucci Medal. In 1890, he was elected a member of the Royal Swedish Academy of Sciences.
The Philadelphia City Council named Edison the recipient of the John Scott Medal in 1889.
In 1899, Edison was awarded the Edward Longstreth Medal of The Franklin Institute.
He was named an Honorable Consulting Engineer at the Louisiana Purchase Exposition World's fair in 1904.
In 1908, Edison received the American Association of Engineering Societies John Fritz Medal.
In 1915, Edison was awarded Franklin Medal of The Franklin Institute for discoveries contributing to the foundation of industries and the well-being of the human race.
In 1920, the United States Navy department awarded him the Navy Distinguished Service Medal.
In 1923, the American Institute of Electrical Engineers created the Edison Medal and he was its first recipient.
In 1927, he was granted membership in the National Academy of Sciences.
On May 29, 1928, Edison received the Congressional Gold Medal.
In 1983, the United States Congress, pursuant to Senate Joint Resolution 140 (Public Law 97–198), designated February 11, Edison's birthday, as National Inventor's Day.
Life magazine (USA), in a special double issue in 1997, placed Edison first in the list of the "100 Most Important People in the Last 1000 Years", noting that the light bulb he promoted "lit up the world". In the 2005 television series The Greatest American , he was voted by viewers as the fifteenth greatest.
In 2008, Edison was inducted in the New Jersey Hall of Fame.
In 2010, Edison was honored with a Technical Grammy Award.
In 2011, Edison was inducted into the Entrepreneur Walk of Fame and named a Great Floridian by the Florida Governor and Cabinet.
Several places have been named after Edison, most notably the town of Edison, New Jersey. Thomas Edison State University, nationally known for adult learners, is in Trenton, New Jersey. Two community colleges are named for him: Edison State College (now Florida SouthWestern State College) in Fort Myers, Florida, and Edison Community College in Piqua, Ohio.There are numerous high schools named after Edison (see Edison High School) and other schools including Thomas A. Edison Middle School. Footballer Pelé's father originally named him Edson, as a tribute to the inventor of the light bulb, but the name was incorrectly listed on his birth certificate as "Edison".
The small town of Alva just east of Fort Myers took Edison's middle name.
In 1883, the City Hotel in Sunbury, Pennsylvania was the first building to be lit with Edison's three-wire system. The hotel was renamed The Hotel Edison upon Edison's return to the city on 1922.
Lake Thomas A Edison in California was named after Edison to mark the 75th anniversary of the incandescent light bulb.
Edison was on hand to turn on the lights at the Hotel Edison in New York City when it opened in 1931.
Three bridges around the United States have been named in Edison's honor: the Edison Bridge in New Jersey,the Edison Bridge in Florida, and the Edison Bridge in Ohio.
In space, his name is commemorated in asteroid 742 Edisona.
In West Orange, New Jersey, the 13.5 acres (5.5 hectares) Glenmont estate is maintained and operated by the National Park Service as the Edison National Historic Site, as is his nearby laboratory and workshops including the reconstructed "Black Maria"—the world's first movie studio. The Thomas Alva Edison Memorial Tower and Museum is in the town of Edison, New Jersey. In Beaumont, Texas, there is an Edison Museum, though Edison never visited there. The Port Huron Museum, in Port Huron, Michigan, restored the original depot that Thomas Edison worked out of as a young news butcher. The depot has been named the Thomas Edison Depot Museum. The town has many Edison historical landmarks, including the graves of Edison's parents, and a monument along the St. Clair River. Edison's influence can be seen throughout this city of 32,000.
In Detroit, the Edison Memorial Fountain in Grand Circus Park was created to honor his achievements. The limestone fountain was dedicated October 21, 1929, the fiftieth anniversary of the creation of the lightbulb.On the same night, The Edison Institute was dedicated in nearby Dearborn.
He was inducted into the Automotive Hall of Fame in 1969.[ citation needed ]
A bronze statue of Edison was placed in the National Statuary Hall Collection at the United States Capitol in 2016, with the formal dedication ceremony held on September 20 of that year. The Edison statue replaced one of 19th-century state governor William Allen that had been one of Ohio's two allowed contributions to the collection.
The Edison Medal was created on February 11, 1904, by a group of Edison's friends and associates. Four years later the American Institute of Electrical Engineers (AIEE), later IEEE, entered into an agreement with the group to present the medal as its highest award. The first medal was presented in 1909 to Elihu Thomson. It is the oldest award in the area of electrical and electronics engineering, and is presented annually "for a career of meritorious achievement in electrical science, electrical engineering or the electrical arts."
In the Netherlands, the major music awards are named the Edison Award after him. The award is an annual Dutch music prize, awarded for outstanding achievements in the music industry, and is one of the oldest music awards in the world, having been presented since 1960.
The American Society of Mechanical Engineers concedes the Thomas A. Edison Patent Award to individual patents since 2000.
The United States Navy named the USS Edison (DD-439), a Gleaves class destroyer, in his honor in 1940. The ship was decommissioned a few months after the end of World War II.In 1962, the Navy commissioned USS Thomas A. Edison (SSBN-610), a fleet ballistic missile nuclear-powered submarine.
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 during his lifetime down to the present day. Edison is also portrayed in popular culture as an adversary of Nikola Tesla.
"Camping with Henry and Tom", a fictional play based on Edison's camping trips with Henry Ford, written by Mark St.Gemain. First presented at Lucille Lortel Theatre, New York, February 20, 1995.[ citation needed ]
On February 11, 2011, on what would have been Thomas Edison's 164th birthday, Google's homepage featured an animated Google Doodle commemorating his many inventions. When the cursor was hovered over the doodle, a series of mechanisms seemed to move, causing a lightbulb to glow.
The following is a list of people who worked for Thomas Edison in his laboratories at Menlo Park or West Orange or at the subsidiary electrical businesses that he supervised.
William Kennedy-Laurie Dickson was a Scottish inventor who devised an early motion picture camera under the employment of Thomas Edison.
George Westinghouse Jr. was an American entrepreneur and engineer based in 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. In 1911 Westinghouse received the AIEE's Edison Medal "For meritorious achievement in connection with the development of the alternating current system."
Artificial lighting technology began to be developed tens of thousands of years ago, and continues to be refined in the present day.
Henry Woodward was a Canadian inventor and a major pioneer in the development of the incandescent lamp.
William Stanley Jr. was an American physicist born in Brooklyn, New York. In his career, he obtained 129 patents covering a variety of electric devices. In 1913, he also patented an all-steel vacuum bottle, and formed the Stanley Bottle Company.
The war of the currents was a series of events surrounding the introduction of competing electric power transmission systems in the late 1880s and early 1890s. It grew out of two lighting systems developed in the late 1870s and early 1880s; arc lamp street lighting running on high voltage alternating current (AC), and large scale low voltage direct current (DC) indoor incandescent lighting being marketed by Thomas Edison's company. In 1886, the Edison system was faced with new competition, an alternating current system developed by George Westinghouse's company that used transformers to step down from a high voltage so AC could be used for indoor lighting. Using high voltage allowed an AC system to transmit power over much longer distances from more efficient large central generating stations. As the use of AC spread rapidly, the Edison Electric Light Company claimed in early 1888 that high voltages used in an alternating current system were hazardous, and that the design was inferior to, and infringed on the patents behind, their direct current system.
Heinrich Göbel, or Henry Goebel, born in Springe, Germany, was a precision mechanic and inventor. In 1848 he emigrated to New York City, where he resided until his death. He received American citizenship in 1865.
Lewis Howard Latimer was an American inventor and draftsman.
Daniel McFarlan Moore was a U.S. electrical engineer and inventor. He developed a novel light source, the "Moore lamp", and a business that produced them in the early 1900s. The Moore lamp was the first commercially viable light-source based on gas discharges instead of incandescence; it was the predecessor to contemporary neon lighting and fluorescent lighting. In his later career Moore developed a miniature neon lamp that was extensively used in electronic displays, as well as vacuum tubes that were used in early television systems.
Edward Goodrich Acheson was an American chemist. Born in Washington, Pennsylvania, he was the inventor of the Acheson process, which is still used to make Silicon carbide (carborundum) and later a manufacturer of carborundum and graphite.
Edward Hibberd Johnson was an inventor and business associate of American inventor Thomas Alva Edison. He was involved in many of Edison's projects, and was a partner in an early organization which evolved into the General Electric Company. When Johnson was Vice President of the Edison Electric Light Company, a predecessor of Con Edison, he created the first known electrically illuminated Christmas tree at his home in New York City in 1882. Edward H. Johnson became the Father of Electric Christmas Tree Lights. He died in an electrical accident.
Charles W. Batchelor was an inventor and close associate of American inventor Thomas Alva Edison during much of Edison’s career. He was involved in some of the greatest inventions and technological developments in history.
The Thomas Edison Center at Menlo Park, also known as the Menlo Park Museum / Edison Memorial Tower, is a memorial to inventor and businessman Thomas Alva Edison, located in the Menlo Park area of Edison, Middlesex County, New Jersey. The tower was dedicated on February 11, 1938, on what would have been the inventor's 91st birthday.
Theodore Miller Edison was an American businessman, inventor, and environmentalist. He was the fourth son and youngest child of inventor Thomas Edison, and founder of Calibron Industries, Inc.. He was the third child of Edison with his second wife, Mina Miller Edison.
Philip H. Diehl was a German-American mechanical engineer and inventor who held several U.S. patents, including electric incandescent lamps, electric motors for sewing machines and other uses, and ceiling fans. Diehl was a contemporary of Thomas Edison and his inventions caused Edison to reduce the price of his incandescent bulb.
John White Howell was an American electrical engineer who spent his entire professional career working for Thomas Edison, specializing in the development and manufacturing of the incandescent lamp.
William Joseph Hammer was an American pioneer electrical engineer and aviator and he was president of the Edison Pioneers starting in 1908. He was a winner of the Elliott Cresson Medal.
The Edison State Park is located in the Menlo Park section of Edison, New Jersey. It is located on Christie Street, the first street in the world to be lit up by lightbulb, just off Lincoln Highway, near the Metropark Train Station. It covers a total area of 37 acres (0.15 km2). The park commemorates the site where the famous inventor Thomas Alva Edison had his Menlo Park laboratory. In his laboratory, Edison invented over 600 inventions such as the incandescent electric light and the phonograph, the latter being the first object to record and play sound.
The Hammer Historical Collection of Incandescent Electric Lamps was an exhibit of early electric light bulbs and was collected by William Joseph Hammer. The collection of lamp bulbs is the most comprehensive known in the world. It shows the technology development of the filament electric light bulb during Thomas Edison's lifetime. Hammer's collection was displayed for years in five glass cases at the Headquarters of the American Institute of Electrical Engineers in New York City. It is now housed at The Henry Ford Museum in Dearborn, Michigan.
Secretary of the Navy Josephus Daniels seized the opportunity created by Edison's public comments to enlist Edison's support. He agreed to serve as the head of a new body of civilian experts – the Naval Consulting Board – to advise the Navy on science and technology.
West Orange, New Jersey, Sunday, October 18, 1931. Thomas Alva Edison died at 3:24 o'clock this morning at his home, Glenmont, in the Llewellyn Park section of this city. The great inventor, the fruits of whose genius so magically transformed the everyday world, was 84 years and 8 months old.
The will of Thomas A. Edison, filed in Newark last Thursday, which leaves the bulk of the inventor's $12 million estate to the sons of his second wife, was attacked as unfair yesterday by William L. Edison, second son of the first wife, who announced at the same time that he would sue to break it.
Thomas A. Edison in the following interview for the first time speaks to the public on the vital subjects of the human soul and immortality. It will be bound to be a most fascinating, an amazing statement, from one of the most notable and interesting men of the age ... Nature is what we know. We do not know the gods of religions. And nature is not kind, or merciful, or loving. If God made me—the fabled God of the three qualities of which I spoke: mercy, kindness, love—He also made the fish I catch and eat. And where do His mercy, kindness, and love for that fish come in? No; nature made us—nature did it all—not the gods of the religions.
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