This page will contain additional articles about Thomas Edison, as they become available.Thomas EdisonThomas Alva EdisonThomas Alva Edison (February 11, 1847 – October 18, 1931) was an American inventor and businessman who developed many important devices. "The Wizard of Menlo Park" was one of the first inventors to apply the principles of mass production to the process of invention. In 1880 Edison founded the journal Science, which in 1900 became the journal of the American Association for the Advancement of Science. Edison is considered one of the most prolific inventors, holding a record 1,093 patents in his name. Most of these inventions were not completely original but improvements of earlier patents, and were actually made by his numerous employees. Edison was frequently criticized for not sharing the credits. Nevertheless, Edison received patents worldwide, including the United States, United Kingdom, France, and Germany. Edison started the Motion Picture Patents Company, which was a conglomerate of nine major film studios (commonly known as the Edison Trust). In the early 1900s, Thomas Edison bought a house in Fort Myers, Florida (Seminole Lodge) as a winter retreat. Henry Ford, the automobile magnate lived across the street at his winter retreat (The Mangoes). They were friends until Edison died. The Edison and Ford Winter Estates are now open to the public. Family backgroundThomas Alva Edison's ancestors, the Dutch Edesons, came to New Jersey in 1730. John Edeson remained loyal to England when the colonies revolted. That got him arrested and nearly hanged. He and his family fled to Nova Scotia, Canada, settling on land the British government gave those who had been loyal to it. In 1811, three generations of Edisons took up farming near Vienna, Ontario. Among them was Samuel Ogden Edison, Jr., a shingle maker, tailor, and tavern keeper who would marry Nancy Matthews Elliott. Samuel Edison was a rebel in the MacKenzie Rebellion that sought Canadian independence. The revolt failed and, like his grandfather, Sam fled for his life. He went to Port Huron, Michigan, temporarily leaving his wife Nancy and children behind. From Port Huron, Sam Edison moved to Detroit, then Peru, Ohio, and finally to Milan, Ohio. That town was enjoying an economic boom. Sam's family joined him and in 1847 grew with the birth of their seventh child, Thomas Alva Edison. The economic success in Milan was soon over, though, and seven-year-old "Al" and his family moved again, this time to Port Huron, MI. Early yearsThomas Edison had a late start in his schooling due to childhood illnesses. His mind often wandered and shortly into his schooling his teacher, Alexander Crawford, was overheard calling him "addled." This ended Edison's three-months of formal schooling. His mother had been a school teacher in Canada and happily took over the job of schooling her son in his academics. Mrs. Edison encouraged and taught her son to read and experiment. Many of his lessons came from reading R. G. Parker's School of natural philosophy. Edison's life in Port Huron, Michigan was a bittersweet experience. Partially deaf since adolescence, he became a telegraph operator after he saved the life of J.U. MacKenzie's son, Jimmie, from being struck by a runaway railcar. MacKenzie was so grateful that he took Edison under his wing and trained him as a telegraph operator. Edison's deafness aided him with his telegraphy work as it blocked out noises and prevented Edison from hearing the telegrapher sitting next to him. Some of his earliest inventions related to electrical telegraphy, included a stock ticker. Edison applied for his first patent, the electric vote recorder, on October 28, 1868. Middle yearsEdison in 1878Thomas Edison began his career as an inventor in Newark, New Jersey with the stock ticker and other improved telegraphic devices, but the invention which first gained Edison wide fame was the phonograph in 1877. While non-reproducible sound recording was first achieved by Leon Scott de Martinville (France, 1857), and others at the time (notably Charles Cros) were contemplating the notion that sound waves might be recorded and reproduced, Edison was the first to publicly demonstrate a device to do so. This accomplishment was so unexpected by the public at large as to appear almost magical. Edison became known as "The Wizard of Menlo Park" after the New Jersey town where he resided. His first phonograph recorded onto tinfoil cylinders that had low sound quality and destroyed the track during replay so that one could listen only once. A redesigned model using wax cylinders was produced soon after by Alexander Graham Bell. Sound quality was still low, and replays were limited before wear destroyed the recording, but the invention enjoyed popularity. The "gramophone," playing gramophone records, was invented by Emile Berliner in 1887, but in the early years, the audio fidelity was worse than the phonograph cylinders marketed by Edison Records. Menlo ParkEdison's major innovation was the Menlo Park research lab, which was built in New Jersey. It was the first institution set up with the specific purpose of producing constant technological innovation and improvement. Edison was the inventor of most of the inventions produced there, though he primarily supervised the operation and work of his employees. Most of Edison's patents were utility patents, with only about a dozen being design patents. Many of his inventions were not completely original, but improvements which allowed for mass production. For example, contrary to public perception, Edison did not invent the electric light bulb. Several designs had already been developed by earlier inventors including Joseph Swan, Henry Woodward, Mathew Evans, James Bowman Lindsay, William Sawyer, Humphrey Davey, and Heinrich Göbel. In 1878, Edison applied the term filament to the element of glowing wire carrying the current, although English inventor Joseph Swan used the term prior to this. Edison took the features of these earlier designs and set his workers to the task of creating longer-lasting bulbs. After Edison purchased the Woodward and Evans patent of 1875, his employees experimented with a large number of different materials to increase the bulb's burning time. By 1879, they had increased the burning time enough to make the light bulb commercially viable. While the earlier inventors had produced electric lighting in laboratory conditions, Edison concentrated on commercial application and was able to sell the concept to homes and businesses by mass-producing relatively long-lasting light bulbs and creating a system for the generation and distribution of electricity. The Menlo Park research lab was made possible by the sale of the quadruplex telegraph that Edison invented in 1874. The quadruplex telegraph could send four simultaneous telegraph signals over the same wire. When Edison asked Western Union to make an offer, he was shocked at the unexpectedly large amount that Western Union offered; the patent rights were sold for $10,000. The quadruplex telegraph was Edison's first big financial success. Incandescence eraU.S. Patent #223898 Electric LampIn 1878, Edison formed Edison Electric Light Company in New York City with several financiers, including J.P. Morgan and the Vanderbilts. Edison made the first public demonstration of incandescent lighting on December 31, 1879, in Menlo Park. On January 27, 1880, he filed a patent in the United States for the electric incandescent lamp. On October 8, 1883, the U.S. patent office ruled that Edison's patent was based on the work of William Sawyer and was invalid. Litigation continued 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. After losing a court battle with Joseph Swan, they formed a joint company (Ediswan) to market the invention. This company and its technological heritage became General Electric in 1892. In 1880, Edison patented a electric distribution system. The first investor-owned electric utility was the 1882 Pearl Street Station, New York City. On January 25, 1881, Edison and Alexander Graham Bell formed the Oriental Telephone Company. On September 4, 1882, Edison switched on the world's first electrical power distribution system, providing 110 volts direct current (DC) to 59 customers in lower Manhattan, around his Pearl Street laboratory. On January 19, 1883, the first standardized electric lighting system employing overhead wires began service in Roselle, New Jersey. |
Main article:War of Currents
Extravagant displays of electric lights quickly became a feature of public events, as this picture from the 1897 Tennessee Centennial Exposition shows.During the initial years of electricity distribution, Edison's DC was the standard for the United States, and Edison was not disposed to lose all his patent royalties. During the "War of Currents" era, Nikola Tesla and Edison became adversaries due to Edison's promotion of DC for electric power distribution over the more efficient alternating current (AC) advocated by Tesla, who patented AC in Graz, Austria. Edison (or, reportedly, one of his employees) employed the tactics of misusing Tesla's patents to construct the first electric chair for the state of New York to promote the idea that AC was deadly. Popular myth has it that Edison invented the electric chair, despite being against capital punishment, solely as a means of impressing the public that AC was more dangerous than DC. In fact, like most of the output of the Menlo Park operations, the chair was primarily invented by a few of his employees, in particular Harold P. Brown, while Edison supervised their operations. [1]
Edison went on to carry out a campaign to discredit and discourage the use of AC. Edison presided personally over several electrocutions of animals, primarily stray cats and dogs, for the benefit of the press to prove that his system of DC was safer than that of AC. Edison's series of animal executions peaked with the electrocution of Topsy the Elephant.
Many of Edison's inventions using DC ultimately lost to AC devices proposed by others. AC distribution systems replaced DC, enormously extending the range and improving the safety and efficiency of power distribution. Since the 1950s, high voltage direct current (HVDC) transmission systems have become more common in certain situations.
As exemplified by the light bulb, most of Edison's inventions were improvements of ideas by others, achieved through a diligent and industrial approach and team-based development. He was the undisputed head of the team, but usually did not share credit for the inventions. He himself said: "genius is one percent inspiration, ninety-nine percent perspiration." Nikola Tesla, possibly Edison's most famous employee who went on to be a great scientist and inventor in his own right, said about Edison's method of problem-solving: "If Edison had a needle to find in a haystack, he would proceed at once with the diligence of the bee to examine straw after straw until he found the object of his search. I was a sorry witness of such doings, knowing that a little theory and calculation would have saved him ninety percent of his labor." He profited from his good connections with Europe - European inventors often did not apply for US patents for their ideas, so that Edison was free to develop their ideas further himself and then obtain his own US patents.
Frank J. Sprague, a former naval officer, was recruited by Edward H. Johnson, and joined the Edison organization in 1883. Sprague was a good mathematician, and one of Sprague's significant contributions to the Edison Laboratory at Menlo Park was the introduction of mathematical methods. Prior to his arrival, Edison conducted many costly trial-and-error experiments. Sprague's approach was to calculate the optimum parameters and thus save much needless tinkering. He did important work for Edison, including correcting Edison's system of mains and feeders for central station distribution. In 1884, Sprague decided his interests in the exploitation of electricity lay elsewhere, and he left Edison to found the Sprague Electric Railway & Motor Company. However, Sprague, who later developed many electrical innovations, always credited Edison for their work together.
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.
Edison holds the patent for the motion picture camera, but it is argued that William Kennedy Laurie Dickson actually invented it while working in the Menlo Park research lab. As with the electric light, an improvement upon ideas developed by others. Edison established the standard of using 35 mm (then 1 and 3/8 inches) film with 4 perforations on the edge of each frame that allowed film to emerge as a mass medium. He built what has been called the first movie studio, the Black Maria, in New Jersey. There, he made the first copyrighted film, Fred Ott's Sneeze. In 1902, a US court rejected Edison's claim that he be granted sole rights over all aspects of movie production in the case "Edison v. American Mutoscope Company" [2].
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. This was especially important to Thomas Edison because he had been searching for a way to entertain customers that were listening to music on his phonograph. Now, people could go to a penny arcade, put in a coin, put on the headphones, and watch a film through the peep-hole.
On August 9, 1892, Edison received a patent for a two-way telegraph.
In 1894, Edison experimented with synchronizing audio with film; the Kinetophone loosely synchronized a Kinetoscope image with a cylinder phonograph. In April of 1896, Edison and Thomas Armat's Vitascope was used to project motion pictures in public screenings in New York City.
Thomas Edison was a freethinker, and was most likely a deist, claiming he did not believe in "the God of the theologians," but did not doubt that "there is a Supreme Intelligence." However, he rejected the idea of the supernatural, along with such ideas as the soul, immortality, and a personal God. "Nature," he said, "is not merciful and loving, but wholly merciless, indifferent."[3]
Edison was a vegetarian: "Non-violence" he said, " 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 married twice, the first time in 1871 to Mary Stilwell (1855-1884), with whom he had three children—Marion Estelle, Thomas Jr., and William Leslie—before she died at age 29, probably of typhoid fever. His second marriage was to Mina Miller (1865-1946), also with three children, Madeleine, Charles (who took over the company), and Theodore Miller. He purchased a home known as Glenmont in 1886 as a wedding gift for Mina in West Orange, New Jersey. The remains of Thomas and Mina Edison are now buried there. The 13.5 acre (55,000 m²) property is maintained by the National Park Service as the Edison National Historic Site.
His contributions to technology benefited people world-wide, and in 1878, he was named Chevalier of the Legion of Honor of France, and in 1889 was made a Commander in the Legion of Honor.
Main article : List of Edison patents
For a discussion of Edison's Record company and its role in the recording industry, see: Edison Records. See also incandescent light bulb.
The town of Edison, New Jersey, and Thomas Edison State College, a nationally-known college for adult learners in Trenton, New Jersey, are named for the inventor. There is a Thomas Alva Edison Memorial Tower and Museum in the town of Edison.
The Edison Medal was created on 11 February 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, and surprisingly to Tesla in 1917. The Edison Medal is the oldest award in the area of electrical and electronics engineering, and presented annually "for a career of meritorious achievement in electrical science, electrical engineering or the electrical arts."
Life magazine (USA), in a special double issue, placed Edison first in the "100 Most Important People in the Last 1000 Years," noting that his light bulb "lit up the world."
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, and retains that name today.
The Port Huron Museums, in Port Huron, MI, restored the original depot that Thomas Edison worked out of as a young newsbutcher. The depot is appropriately been named the Thomas Edison Depot Museum. The town has many Edison historical landmarks including the gravesites of Edison's parents.
The destroyer USS Edison (DD-439) was launched in 1940 in his honor.
In recognition of the enormous contribution inventors make to the nation and the world, the Congress, pursuant to Senate Joint Resolution 140 (Public Law 97 - 198), has designated February 11, the anniversary of the birth of Thomas Alva Edison, as National Inventors' Day
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In recognition of the enormous contribution inventors make to the nation and the world, the Congress, pursuant to Senate Joint Resolution 140 (Public Law 97 - 198), has designated February 11, the anniversary of the birth of Thomas Alva Edison, as National Inventors' Day. With the genius and legacy of Leonardo da Vinci having captivated authors and scholars generations after his death, the following examples of "Da Vinci fiction" can be found in culture and literature. The destroyer USS Edison (DD-439) was launched in 1940 in his honor. his tank. The town has many Edison historical landmarks including the gravesites of Edison's parents. While most of Leonardo's inventions were not realized, many were technologically feasible as it was demonstrated recently, e.g. The depot is appropriately been named the Thomas Edison Depot Museum. In January 2005, researchers discovered the hidden laboratory used by Leonardo da Vinci for studies of flight and other pioneering scientific work in previously sealed rooms at a monastery next to the Basilica of the Santissima Annunziata, in the heart of Florence.[6]. The Port Huron Museums, in Port Huron, MI, restored the original depot that Thomas Edison worked out of as a young newsbutcher. They remained obscure until the 19th century, and were not directly of value to the development of science and technology. The hotel was renamed The Hotel Edison, and retains that name today. Technological historian Lewis Mumford suggests that Leonardo kept notebooks as a private journal, intentionally censoring his work from those who might irresponsibly use it (the tank, for instance). The City Hotel, in Sunbury, Pennsylvania, was the first building to be lit with Edison's three-wire system. Why Leonardo did not publish or otherwise distribute the contents of his notebooks remains a mystery to those who believe that Leonardo wanted to make his observations public knowledge. Life magazine (USA), in a special double issue, placed Edison first in the "100 Most Important People in the Last 1000 Years," noting that his light bulb "lit up the world.". In his years in the Vatican, he planned an industrial use of solar power, by employing concave mirrors to heat water. The Edison Medal is the oldest award in the area of electrical and electronics engineering, and presented annually "for a career of meritorious achievement in electrical science, electrical engineering or the electrical arts.". Other inventions include a submarine, a cog-wheeled device that has been interpreted as the first mechanical calculator, and a car powered by a spring mechanism. The first medal was presented in 1909 to Elihu Thomson, and surprisingly to Tesla in 1917. even though he later held war to be the worst of human activities. 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. Owing to his sometime employment as a military engineer, his notebooks also contain several designs for military machines: machine guns, an armoured tank powered by humans or horses, cluster bombs, etc. The Edison Medal was created on 11 February 1904 by a group of Edison's friends and associates. It was never built, but Leonardo's vision was resurrected in 2001 when a smaller bridge based on his design was constructed in Norway. There is a Thomas Alva Edison Memorial Tower and Museum in the town of Edison. The bridge was intended to span an inlet at the mouth of the Bosphorus known as the Golden Horn. The town of Edison, New Jersey, and Thomas Edison State College, a nationally-known college for adult learners in Trenton, New Jersey, are named for the inventor. In 1502 Leonardo da Vinci produced a drawing of a single span 720-foot (240 m) bridge as part of a civil engineering project for Sultan Beyazid II of Constantinople. See also incandescent light bulb. On January 3, 1496 he unsuccessfully tested a flying machine he had constructed. For a discussion of Edison's Record company and its role in the recording industry, see: Edison Records. Fascinated by the phenomenon of flight, Leonardo produced detailed studies of the flight of birds, and plans for several flying machines, including a helicopter powered by four men (which would not have worked since the body of the craft would have rotated) and a light hang-glider which could have flown. Main article : List of Edison patents. It is not known if an attempt was made to build the device. His contributions to technology benefited people world-wide, and in 1878, he was named Chevalier of the Legion of Honor of France, and in 1889 was made a Commander in the Legion of Honor. The design, which has come to be called Leonardo's robot, was probably made around the year 1495 but was rediscovered only in the 1950s. The 13.5 acre (55,000 m²) property is maintained by the National Park Service as the Edison National Historic Site. His study of human anatomy led also to the design of the first known robot in recorded history. The remains of Thomas and Mina Edison are now buried there. Because he actively searched for bodily deformed people to paint them, he is also considered to be the beginner of caricature. He purchased a home known as Glenmont in 1886 as a wedding gift for Mina in West Orange, New Jersey. It is important to note that he was not only interested in structure but also in function, so he was anatomist and physiologist at the same time. His second marriage was to Mina Miller (1865-1946), also with three children, Madeleine, Charles (who took over the company), and Theodore Miller. He not only studied the anatomy of human, but also of other beings. He was married twice, the first time in 1871 to Mary Stilwell (1855-1884), with whom he had three children—Marion Estelle, Thomas Jr., and William Leslie—before she died at age 29, probably of typhoid fever. He was a master of topographic anatomy. Until we stop harming all other living beings, we are still savages.". He often drew muscles and tendons of the cervical muscles and of the shoulder. Edison was a vegetarian: "Non-violence" he said, " leads to the highest ethics, which is the goal of all evolution. He was one of the firsts who drew the fetus in the intrauterine position (he wished to learn about "the miracle of pregnancy"). "Nature," he said, "is not merciful and loving, but wholly merciless, indifferent."[3]. He drew many images of the lungs, mesentery, urinary tract, sex organs, and even coitus. Thomas Edison was a freethinker, and was most likely a deist, claiming he did not believe in "the God of the theologians," but did not doubt that "there is a Supreme Intelligence." However, he rejected the idea of the supernatural, along with such ideas as the soul, immortality, and a personal God. He was also able to represent exceptionally well the human skull and cross-sections of the brain (transversal, sagittal, and frontal). In April of 1896, Edison and Thomas Armat's Vitascope was used to project motion pictures in public screenings in New York City. He also studied the inclination of pelvis and sacrum and stressed that sacrum was not uniform, but composed of five vertebrae. In 1894, Edison experimented with synchronizing audio with film; the Kinetophone loosely synchronized a Kinetoscope image with a cylinder phonograph. Leonardo drew many images of the human skeleton, and was the first to describe the double S form of the backbone. On August 9, 1892, Edison received a patent for a two-way telegraph. However, his book was published only in 1580 (long after his death) under the heading Treatise on painting. Now, people could go to a penny arcade, put in a coin, put on the headphones, and watch a film through the peep-hole. Together with Marcantonio, he prepared to publish a theoretical work on anatomy and made more than 200 drawings. This was especially important to Thomas Edison because he had been searching for a way to entertain customers that were listening to music on his phonograph. In 30 years, Leonardo dissected 30 male and female corpses of different ages. This device was installed in penny arcades, where people could watch short, simple films. From 1510 to 1511 he collaborated with the doctor Marcantonio della Torre (1481 to 1511). In 1891, Thomas Edison built a Kinetoscope, or peep-hole viewer. Later he dissected also in Milano in the hospital Maggiore and in Rome in the hospital Santo Spirito (the first mainland Italian hospital). American Mutoscope Company" [2]. As he became successful as an artist, he was given permission to dissect human corpses at the hospital Santa Maria Nuova in Florence. In 1902, a US court rejected Edison's claim that he be granted sole rights over all aspects of movie production in the case "Edison v. Leonardo started to discover the anatomy of the human body at the time he was apprenticed to Andrea del Verrocchio, as his teacher insisted that all his pupils learn anatomy. There, he made the first copyrighted film, Fred Ott's Sneeze. As did most people at the time, he believed that the Sun revolved around the Earth, and that the Moon reflects the sun's light due to its being covered by water. He built what has been called the first movie studio, the Black Maria, in New Jersey. Since he lacked formal education in Latin and mathematics, contemporary scholars mostly ignored Leonardo the scientist. Edison established the standard of using 35 mm (then 1 and 3/8 inches) film with 4 perforations on the edge of each frame that allowed film to emerge as a mass medium. Throughout his life, he planned a grand encyclopedia based on detailed drawings of everything. As with the electric light, an improvement upon ideas developed by others. His approach to science was an observatory one: he tried to understand a phenomenon by describing and depicting it in utmost detail, and did not emphasize experiments or theoretical explanations. Edison holds the patent for the motion picture camera, but it is argued that William Kennedy Laurie Dickson actually invented it while working in the Menlo Park research lab. This is explainable by the fact that it is easier to pull a quill pen than to push it; by using mirror-writing, the left-handed writer is able to pull the pen from right to left. This allowed him to make his early fortune with the stock ticker, the first electricity-based broadcast system. He was left-handed and used mirror writing throughout his life. With knowledge gained from years of working as a telegraph operator, he learned the basics of electricity. These notes were made and maintained through Leonardo's travels through Europe, during which he made continual observations of the world around him. The key to Edison's fortunes was telegraphy. Perhaps even more impressive than his artistic work are his studies in science and engineering, recorded in notebooks comprising some 13,000 pages of notes and drawings, which fuse art and science. However, Sprague, who later developed many electrical innovations, always credited Edison for their work together. Chiaroscuro is the technique of modelling and defining forms through contrasts of light and shadow. In 1884, Sprague decided his interests in the exploitation of electricity lay elsewhere, and he left Edison to found the Sprague Electric Railway & Motor Company. It is characterized by subtle transitions between colour areas, creating an atmospheric haze or smoky effect. He did important work for Edison, including correcting Edison's system of mains and feeders for central station distribution. One of them, a colour shading technique called sfumato, used a series of custom-made glazes by Leonardo. Sprague's approach was to calculate the optimum parameters and thus save much needless tinkering. Leonardo pioneered new painting techniques in many of his pieces. Prior to his arrival, Edison conducted many costly trial-and-error experiments. After producing a fantastic variety of studies in preparation for the work, he left the city, with the mural unfinished due to technical difficulties. Sprague was a good mathematician, and one of Sprague's significant contributions to the Edison Laboratory at Menlo Park was the introduction of mathematical methods. After returning to Florence, he was commissioned for a large public mural, The Battle of Anghiari; his rival Michelangelo was to paint the opposite wall. Johnson, and joined the Edison organization in 1883. (In 1999 a pair of full-scale statues based on his plans were cast, one erected in Grand Rapids, Michigan, the other in Milan [5].) The Hunt Museum in Limerick, Ireland has a small bronze horse, thought to be the work of an apprentice from Leonardo's original design. Sprague, a former naval officer, was recruited by Edward H. Because of war with France, the project was never finished. Frank J. In Milan he spent 17 years making plans and models for a monumental seven metre (24 ft) high horse statue in bronze called "Gran Cavallo". I was a sorry witness of such doings, knowing that a little theory and calculation would have saved him ninety percent of his labor." He profited from his good connections with Europe - European inventors often did not apply for US patents for their ideas, so that Edison was free to develop their ideas further himself and then obtain his own US patents. None of his sculptures have survived. He himself said: "genius is one percent inspiration, ninety-nine percent perspiration." Nikola Tesla, possibly Edison's most famous employee who went on to be a great scientist and inventor in his own right, said about Edison's method of problem-solving: "If Edison had a needle to find in a haystack, he would proceed at once with the diligence of the bee to examine straw after straw until he found the object of his search. Of his paintings, only seventeen survived. He was the undisputed head of the team, but usually did not share credit for the inventions. After extensive, ambitious plans and many drawings, the painting was left unfinished and Leonardo left for Milan. As exemplified by the light bulb, most of Edison's inventions were improvements of ideas by others, achieved through a diligent and industrial approach and team-based development. For example, in 1481 he was commissioned to paint the altarpiece The Adoration of the Magi. Since the 1950s, high voltage direct current (HVDC) transmission systems have become more common in certain situations. Leonardo often planned grandiose paintings with many drawings and sketches, only to leave the projects unfinished. AC distribution systems replaced DC, enormously extending the range and improving the safety and efficiency of power distribution. The name Mona Lisa is not the one given to the piece of art at the time, nor was it known by this title until much later. Many of Edison's inventions using DC ultimately lost to AC devices proposed by others. It is well known that Leonardo made extensive use of many tricks in this painting, including the so-called Golden Ratio. Edison's series of animal executions peaked with the electrocution of Topsy the Elephant. Thousands of people see it each year in the Louvre, perhaps drawing their own interpretation on what is known as the Mona Lisa's most infamous and enigmatic feature - her smile. Edison presided personally over several electrocutions of animals, primarily stray cats and dogs, for the benefit of the press to prove that his system of DC was safer than that of AC. He most likely kept it with him at all times, and did not travel without it. Edison went on to carry out a campaign to discredit and discourage the use of AC. Though there is significant debate whether Leonardo himself painted the Mona Lisa, or whether it was the work of his students, it is known that it was probably his favourite piece. [1]. Leonardo is well known for his artistry and paintings, such as Last Supper (Ultima Cena or Cenacolo, in Milan) 1498, and the Mona Lisa (also known as La Gioconda, now at the Louvre in Paris), 1503-1506. Brown, while Edison supervised their operations. Melzi was his principal heir and executor, but Salai was not forgotten: he received half of Leonardo's vineyard. In fact, like most of the output of the Menlo Park operations, the chair was primarily invented by a few of his employees, in particular Harold P. He was buried in the Chapel of Saint-Hubert in the castle of Amboise. Popular myth has it that Edison invented the electric chair, despite being against capital punishment, solely as a means of impressing the public that AC was more dangerous than DC. According to his wish, 60 beggars followed his casket. Edison (or, reportedly, one of his employees) employed the tactics of misusing Tesla's patents to construct the first electric chair for the state of New York to promote the idea that AC was deadly. Leonardo da Vinci died at Clos Lucé, France, on 2nd May, 1519. During the "War of Currents" era, Nikola Tesla and Edison became adversaries due to Edison's promotion of DC for electric power distribution over the more efficient alternating current (AC) advocated by Tesla, who patented AC in Graz, Austria. Francis became a close friend. During the initial years of electricity distribution, Edison's DC was the standard for the United States, and Edison was not disposed to lose all his patent royalties. In 1518 Salai left Leonardo and returned to Milan, where he eventually perished in a duel. Main article:War of Currents. The King granted Leonardo and his entourage generous pensions: the surviving document lists 1000 écus for the artist, 400 for Melzi (named "apprentice") and 100 for Salai (named "servant"). On January 19, 1883, the first standardized electric lighting system employing overhead wires began service in Roselle, New Jersey. In 1515 Francis I of France retook Milan, and Leonardo was commissioned to make a centrepiece (a mechanical lion) for the peace talks between the French king and Pope Leo X in Bologna, where he must have first met the King. On September 4, 1882, Edison switched on the world's first electrical power distribution system, providing 110 volts direct current (DC) to 59 customers in lower Manhattan, around his Pearl Street laboratory. However, he was probably of pivotal importance in the relocation of David (in Florence), one of Michelangelo's masterpieces, against the artist's will. On January 25, 1881, Edison and Alexander Graham Bell formed the Oriental Telephone Company. From 1513 to 1516, he lived in Rome, where painters like Raphael and Michelangelo were active at the time, though he did not have much contact with these artists. The first investor-owned electric utility was the 1882 Pearl Street Station, New York City. In 1506 he returned to Milan, now in the hands of Maximilian Sforza after Swiss mercenaries had driven out the French. In 1880, Edison patented a electric distribution system. In Florence he entered the services of Cesare Borgia, the son of Pope Alexander VI, acting as a military architect and engineer; with Cesare he travelled throughout Italy. This company and its technological heritage became General Electric in 1892. He left with Salai and his friend Luca Pacioli (the first man to describe double-entry bookkeeping) for Mantua, moving on after 2 months to Venice (where he was hired as a military engineer), then briefly returning to Florence at the end of April 1500. After losing a court battle with Joseph Swan, they formed a joint company (Ediswan) to market the invention. Leonardo stayed in Milan for a time, until one morning when he found French archers using his life-size clay model of the "Gran Cavallo" for target practice. Litigation continued 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. When the French returned under Louis XII in 1498, Milan fell without a fight, overthrowing Sforza [4]. patent office ruled that Edison's patent was based on the work of William Sawyer and was invalid. It was here that seventy tons of bronze that had been set aside for Leonardo's "Gran Cavallo" horse statue (see below) were cast into weapons for the Duke in an attempt to save Milan from the French under Charles VIII in 1495. On October 8, 1883, the U.S. From around 1482 to 1499, Ludovico Sforza, Duke of Milan [3], employed Leonardo and permitted him to operate his own workshop complete with apprentices. On January 27, 1880, he filed a patent in the United States for the electric incandescent lamp. He was also a respected judge on matters of beauty and elegance, particularly in the creation of pageants. Edison made the first public demonstration of incandescent lighting on December 31, 1879, in Menlo Park. Vasari reports a story that as a young man in Florence he often bought caged birds just to release them from captivity. Morgan and the Vanderbilts. Under the heading, "Of the beasts from whom cheese is made," he answers, "the milk will be taken from the tiny children." [2]). In 1878, Edison formed Edison Electric Light Company in New York City with several financiers, including J.P. His respect for life led him to being a vegetarian at least part of his life (although the term 'vegan' would fit him well, as he even entertained the notion that taking milk from cows amounts to stealing. The quadruplex telegraph was Edison's first big financial success. It is apparent from the works of Leonardo and his early biographers that he was a man of high integrity and very sensitive to moral issues. When Edison asked Western Union to make an offer, he was shocked at the unexpectedly large amount that Western Union offered; the patent rights were sold for $10,000. Leonardo had many other friends who are now figures renowned in their fields, or for their influence on history; these included Niccolò Machiavelli, Cesare Borgia and Franchinus Gaffurius. The quadruplex telegraph could send four simultaneous telegraph signals over the same wire. Melzi, however, became Leonardo's pupil and life companion. The Menlo Park research lab was made possible by the sale of the quadruplex telegraph that Edison invented in 1874. Though Salai was always introduced as Leonardo's "pupil", he never produced any work of artistic merit. While the earlier inventors had produced electric lighting in laboratory conditions, Edison concentrated on commercial application and was able to sell the concept to homes and businesses by mass-producing relatively long-lasting light bulbs and creating a system for the generation and distribution of electricity. Salai eventually accepted Melzi's continued presence and the three undertook journeys throughout Italy. By 1879, they had increased the burning time enough to make the light bulb commercially viable. In 1506, Leonardo met Count Francesco Melzi, the 15 year old son of a Lombard aristocrat. After Edison purchased the Woodward and Evans patent of 1875, his employees experimented with a large number of different materials to increase the bulb's burning time. Some believe this can be explained by Leonardo's role as a mentor and teacher, which required male assistants to aid him in his work, and that his appreciation of androgynous beauty was due solely to his fascination with the workings of both sexes of the human body. Edison took the features of these earlier designs and set his workers to the task of creating longer-lasting bulbs. Gian entered Leonardo's household around 1488 at the age of 10, becoming his servant and assistant for the next thirty years. In 1878, Edison applied the term filament to the element of glowing wire carrying the current, although English inventor Joseph Swan used the term prior to this. One of his lovers is thought to have been Gian Giacomo Caprotti da Oreno (nicknamed Salai (Little Devil)). Several designs had already been developed by earlier inventors including Joseph Swan, Henry Woodward, Mathew Evans, James Bowman Lindsay, William Sawyer, Humphrey Davey, and Heinrich Göbel. It has therefore been widely assumed that he was a homosexual. For example, contrary to public perception, Edison did not invent the electric light bulb. Though he kept his private life particularly secret, it is known that he surrounded himself with handsome young men throughout his life, and his art reflects an appreciation of androgynous beauty (and in at least one instance, sexuality). Many of his inventions were not completely original, but improvements which allowed for mass production. There is no evidence that Leonardo was ever intimately involved with any woman, nor in a close friendship with one. Most of Edison's patents were utility patents, with only about a dozen being design patents. Rocke reports that in a fictional dialogue on l'amore masculino (male love) written by the contemporary art critic and theorist Gian Paolo Lomazzo, Leonardo appears as one of the protagonists and declares, "Know that male love is exclusively the product of virtue which, joining men together with the diverse affections of friendship, makes it so that from a tender age they would enter into the manly one as more stalwart friends." In the dialogue, the interlocutor inquires of Leonardo about his relations with his assistant, Salai, "Did you play the game from behind which the Florentines love so much?". Edison was the inventor of most of the inventions produced there, though he primarily supervised the operation and work of his employees. Modern critics contend that Leonardo's love of boys was well-known even in the sixteenth century. It was the first institution set up with the specific purpose of producing constant technological innovation and improvement. For some time afterwards, Leonardo and the others were kept under observation by Florence's Officers of the Night - a kind of Renaissance vice squad, charged with suppressing the practice of sodomy, which a majority of male Florentines engaged in, as shown by surviving legal records of the Podestà and the Officers of the Night. Edison's major innovation was the Menlo Park research lab, which was built in New Jersey. After two months in jail, he was acquitted because no witnesses stepped forward. The "gramophone," playing gramophone records, was invented by Emile Berliner in 1887, but in the early years, the audio fidelity was worse than the phonograph cylinders marketed by Edison Records. In 1476, he was accused anonymously, along with three other men, of sodomy with a 17 year-old model, Jacopo Saltarelli, who was a notorious male prostitute. Sound quality was still low, and replays were limited before wear destroyed the recording, but the invention enjoyed popularity. Later, he became an independent painter in Florence. A redesigned model using wax cylinders was produced soon after by Alexander Graham Bell. In this role, Leonardo also worked with Lorenzo di Credi and Pietro Perugino. His first phonograph recorded onto tinfoil cylinders that had low sound quality and destroyed the track during replay so that one could listen only once. His early sketches were of such quality that his father soon showed them to the painter Andrea del Verrocchio, who subsequently took on the fourteen-year old Leonardo as an apprentice. Edison became known as "The Wizard of Menlo Park" after the New Jersey town where he resided. Leonardo grew up with his father in Florence, where he started drawing and painting. This accomplishment was so unexpected by the public at large as to appear almost magical. Leonardo signed his works "Leonardo" or "Io, Leonardo" ("I, Leonardo"). While non-reproducible sound recording was first achieved by Leon Scott de Martinville (France, 1857), and others at the time (notably Charles Cros) were contemplating the notion that sound waves might be recorded and reproduced, Edison was the first to publicly demonstrate a device to do so. Leonardo was born before modern naming conventions developed in Europe; his name "Leonardo di ser Piero da Vinci", simply means "Leonardo, son of [Mes]ser Piero, from Vinci". Thomas Edison began his career as an inventor in Newark, New Jersey with the stock ticker and other improved telegraphic devices, but the invention which first gained Edison wide fame was the phonograph in 1877. It has been suggested, albeit on scanty evidence [1], that she was a Middle Eastern slave owned by Piero. Edison applied for his first patent, the electric vote recorder, on October 28, 1868. Leonardo was born in Anchiano, near Vinci, Italy, the illegitimate child of Ser Piero da Vinci, a young notary, and Caterina, most likely a peasant girl. Some of his earliest inventions related to electrical telegraphy, included a stock ticker. . Edison's deafness aided him with his telegraphy work as it blocked out noises and prevented Edison from hearing the telegrapher sitting next to him. Renaissance humanism saw no mutually exclusive polarities between sciences and arts. MacKenzie was so grateful that he took Edison under his wing and trained him as a telegraph operator. In addition, he helped advance the study of anatomy, astronomy, and civil engineering. MacKenzie's son, Jimmie, from being struck by a runaway railcar. He is also known for designing many inventions that anticipated modern technology, although few of these designs were constructed in his lifetime. Partially deaf since adolescence, he became a telegraph operator after he saved the life of J.U. Leonardo is famous for his masterly paintings, such as The Last Supper and Mona Lisa. Edison's life in Port Huron, Michigan was a bittersweet experience. He has been described as the archetype of the "Renaissance man" and as a universal genius. Parker's School of natural philosophy. Leonardo da Vinci (April 15, 1452 – May 2, 1519) was an Italian Renaissance architect, musician, anatomist, inventor, engineer, sculptor, geometer, and painter. G. ISBN 8809038916 (hardback). Many of his lessons came from reading R. Giunti. Edison encouraged and taught her son to read and experiment. Leonardo da Vinci: Artist, Scientist, Inventor. Mrs. Simona Cremante (2005). His mother had been a school teacher in Canada and happily took over the job of schooling her son in his academics. ISBN 0-140-29681-6. His mind often wandered and shortly into his schooling his teacher, Alexander Crawford, was overheard calling him "addled." This ended Edison's three-months of formal schooling. Penguin. Thomas Edison had a late start in his schooling due to childhood illnesses. Leonardo da Vinci, The Flights of the mind. The economic success in Milan was soon over, though, and seven-year-old "Al" and his family moved again, this time to Port Huron, MI. Charles Nicholl (2005). Sam's family joined him and in 1847 grew with the birth of their seventh child, Thomas Alva Edison. Dépot légal 4° trimestre 1965. That town was enjoying an economic boom. Somogy. From Port Huron, Sam Edison moved to Detroit, then Peru, Ohio, and finally to Milan, Ohio. Léonard de Vinci, L'homme et son oeuvre. He went to Port Huron, Michigan, temporarily leaving his wife Nancy and children behind. Fred Bérence (1965). The revolt failed and, like his grandfather, Sam fled for his life. ISBN 3822817341 (hardback). Samuel Edison was a rebel in the MacKenzie Rebellion that sought Canadian independence. Taschen. Among them was Samuel Ogden Edison, Jr., a shingle maker, tailor, and tavern keeper who would marry Nancy Matthews Elliott. Leonardo Da Vinci: The Complete Paintings and Drawings. In 1811, three generations of Edisons took up farming near Vienna, Ontario. Frank Zollner & Johannes Nathan (2003). He and his family fled to Nova Scotia, Canada, settling on land the British government gave those who had been loyal to it. A reprint of the original 1883 edition. That got him arrested and nearly hanged. 2 volumes. John Edeson remained loyal to England when the colonies revolted. ISBN 0486225720 and ISBN 0486225739 (paperback). Thomas Alva Edison's ancestors, the Dutch Edesons, came to New Jersey in 1730. Dover. . The Notebooks of Leonardo da Vinci. The Edison and Ford Winter Estates are now open to the public. Jean Paul Richter (1970). They were friends until Edison died. ISBN 0806513500 (paperback). Henry Ford, the automobile magnate lived across the street at his winter retreat (The Mangoes). Carol Publishing Group. In the early 1900s, Thomas Edison bought a house in Fort Myers, Florida (Seminole Lodge) as a winter retreat. The 100. Edison started the Motion Picture Patents Company, which was a conglomerate of nine major film studios (commonly known as the Edison Trust). Hart (1992). Nevertheless, Edison received patents worldwide, including the United States, United Kingdom, France, and Germany. Michael H. Edison was frequently criticized for not sharing the credits. ISBN 0385323816 (paperback). Most of these inventions were not completely original but improvements of earlier patents, and were actually made by his numerous employees. Delacorte Press. Edison is considered one of the most prolific inventors, holding a record 1,093 patents in his name. How to Think Like Leonardo da Vinci: Seven Steps to Genius Every Day. In 1880 Edison founded the journal Science, which in 1900 became the journal of the American Association for the Advancement of Science. Gelb (1998). "The Wizard of Menlo Park" was one of the first inventors to apply the principles of mass production to the process of invention. Michael J. Thomas Alva Edison (February 11, 1847 – October 18, 1931) was an American inventor and businessman who developed many important devices. The cartoon The Tick features Leonardo in Leonardo DaVinci and his Fightin' Genius Time Commandos! (Season 2, Episode 17, 1995). Johnson had light bulbs specially made, hand-wired, and displayed at his home on Fifth Avenue in New York City on the first electrically-illuminated Christmas tree on December 22, 1882. Peter Barnes's Leonardo's Last Supper centres on Leonardo being "resurrected" in a filthy charnel house after being prematurely declared dead. Edward H. The movie Hudson Hawk starring Bruce Willis and Danny Aiello revolves around Leonardo da Vinci's inventions. Emil Berliner developed the gramophone, which is essentially an improved phonograph, with the main difference being the use of flat records with spiral grooves. The movie Ever After from 1998 starring Drew Barrymore and Patrick Godfrey as Leonardo da Vinci. Nikola Tesla developed alternating current distribution, which could be used to transmit electricity over longer distance than Edison's direct current due to the ability to transform the voltage. Leonardo in the Teenage Mutant Ninja Turtles was named after Leonardo da Vinci. Lewis Latimer patented an improved method of producing the filament in light bulbs. Dan Brown's The Da Vinci Code revolves around a conspiracy based on elements of Leonardo's Last Supper and other works, claiming that he belonged to the Priory of Sion (a sect generally regarded as fictitious). Tattoo gun. The Dargaud cartoon character Léonard by Turk and De Groot. Autographic printer. Terry Pratchett's character Leonard of Quirm is a pastiche of Leonardo. Edison purchased the Woodward and Evans patent for the electric bulb and improved the design. In the mainstream DC Universe, according to "Secret Origins" #27, Leonardo is an ancestor of the famed Freemason Cagliostro, as well as Zatara and Zatanna who are both magicians (in the Magic (illusion) and Magic (paranormal) senses) and Superheroes. Edison provided financial backing for Guglielmo Marconi's work on Radio transmission, and obtained several related patents. DC Comics's Vertigo division published a twelve-issue miniseries about Leonardo and his apprentice Salai, entitled "Chiaroscuro: The Private Life of Leonardo da Vinci.". Dictaphone. The DC Comics Elseworlds story Black Masterpiece, in Batman Annual #18 shows Leonardo's apprentice becoming a Renaissance Batman, using the Master's devices in his war on Florentine crime. Kinetoscope. Dann has his genius protagonist actually create his flying machine. Phonograph. The novel The Memory Cathedral by Jack Dann is a fictional account of a "lost year" in the life of Leonardo. The novel Pasquale's Angel by Paul McAuley, set in an alternate universe Florence, portrays Leonardo as "the Great Engineer", creating a premature industrial revolution (see clockpunk). Theodore Mathieson's short story "Leonardo Da Vinci: Detective" portrays him using his genius to solve a murder during his time in France. Leonardo also appears as a character in several Doctor Who novels. The Doctor goes back in time to visit Leonardo's workshop and claims to be an old acquaintance of the artist. The 1979 Doctor Who story City of Death features a theft of the Mona Lisa. Da Vinci (NCC-81623), a Saber-class vessel, named for the artist. (Starfleet Corps of Engineers) novels, the main starship of the series is called the U.S.S. Also, in the S.C.E. Actor James Daly played Flint / Leonardo in Star Trek: The Original Series, while John Rhys-Davies portrayed Leonardo in Star Trek Voyager. Leonardo appears again in the Star Trek universe, in the series Star Trek Voyager, where his workshop is created as a holographic simulation. Leonardo's abilities and knowledge are thus attributed to centuries of scientific and artistic study. In the Star Trek: Original Series episode "Requiem for Methuselah", Leonardo da Vinci is revealed to be one of many aliases to "Flint", an immortal man born in the year 3834 BC. Bacchus (1515) – Louvre, Paris, France. 1514) – Louvre, Paris, France. John the Baptist (c. St. 1510) – Louvre, Paris, France. Anne (c. The Virgin and Child with St. Leda and the Swan (1508) - (Only copies survive – best-known example in Galleria Borghese, Rome, Italy). The Madonna of the Rocks or The Virgin of the Rocks (1508) – National Gallery, London, UK. Mona Lisa or La Gioconda (1503-1505/1506) – Louvre, Paris, France. 1499-1500) – National Gallery, London, UK. John the Baptist (c. Anne and St. The Virgin and Child with St. Maria delle Grazie, Milan, Italy. Last Supper (1498) – Convent of Sta. La belle Ferronière (1495-1498) – Louvre, Paris, France. Madonna Litta (1490-91) – Hermitage Museum, Saint Petersburg, Russia. 1490) – Pinacoteca Ambrosiana, Milan, Italy. Portrait of a Musician (c. Lady with an Ermine (1488-90) – Czartoryski Museum, Krakow, Poland. The Madonna of the Rocks (1483-86) – Louvre, Paris, France. Adoration of the Magi (1481) – Uffizi, Florence, Italy. The Virgin with Flowers (1478-1481) – Alte Pinakothek, Munich, Germany. The Benois Madonna (1478-1480) – Hermitage Museum, Saint Petersburg, Russia. 1475) – National Gallery of Art, Washington DC, USA. Ginevra de' Benci (c. Annunciation (1475-1480) – Uffizi, Florence, Italy. |