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Guglielmo Marconi

Guglielmo Marconi

Guglielmo Marconi (25 April 1874 – 20 July 1937) was an Italian electrical engineer and Nobel laureate, known for the development of a practical wireless telegraphy system commonly known as the "radio". Marconi was President of the Accademia d'Italia and a member of the Fascist Grand Council of Italy.

Background

Marconi was born near to Bologna, Italy, the second son of Giuseppe Marconi, an Italian landowner, and his Irish wife, Annie Jameson, granddaughter of the founder of the Jameson & Sons Distillery on 25 April 1874. He was educated in Florence and, later, in Livorno.

Middle years

Although many scientists and inventors contributed to the invention of wireless telegraphy, including Oliver Lodge, Hans Christian Ørsted, Michael Faraday, Heinrich Rudolf Hertz, Jagadis Chandra Bose, Alexander Popov, Nikola Tesla, Thomas Alva Edison, Nathan Stubblefield, and others, Marconi's practical system achieved widespread use, so he is often credited as the "father of radio." Marconi's system was based primarily on Nikola Tesla's system, theoretically demonstrated during a widely known lecture titled On Light and Other High Frequency Phenomena, presented before a meeting of the National Electric Light Association in St. Louis and the Franklin Institute in Philadelphia.

Marconi sent radio signals of 300 meters (and up to 6 Kilometers) on Salisbury Plain (England) in 1896. Marconi was awarded the patent for Radio with British Patent GB12039, "Improvements in transmitting electrical impulses and signals and in apparatus there-for" on 2 July 1897 (sometimes recognised as the World's first patent). In July 1897, Marconi formed the London based Wireless Telegraph Trading Signal Company (later renamed the Marconi Wireless Telegraph Company), which opened the World's first "wireless" factory in Hall Street, Chelmsford, England in 1898, employing around 50 people.

Marconi made the first wireless transmission across water May 13th 1897, from Lavernock Point, South Wales to Flat holm Island. He made a wireless transmission across the water from Ballycastle (Northern Ireland) to Rathlin Island in 1898. He received the first trans-Atlantic radio signal on 12 December 1901 at Signal Hill in St John's, Newfoundland (now in Canada) using a 400-foot kite-supported antenna for reception.

This was surprising at the time as it was thought by the mainstream that a radio signal could only be transmitted in the line of sight. The transmitting station in Poldhu, Cornwall used a spark-gap transmitter to produce a signal with a frequency of approximately 500kHz and a power of 100 times more than any radio signal previously produced (a maximum time-averaged power of 35 kilowatts, but with a peak pulse power of several tens of megawatts [1]). The message received was three dots, the Morse code for the letter S. To reach Newfoundland the signal would have to bounce off the ionosphere twice. Dr Jack Belrose has recently contested this, however, based on theoretical work as well as an actual reenactment of the experiment; he believes that Marconi heard only random atmospheric noise and mistook it for the signal. However there is little doubt that by February 1902, Marconi's apparatus was fairly reliably receiving complete messages at 2500 km (1550 miles) at night and 1100 km (700 miles) by day, and usually picked up a special test signal at 3400 km (2100 miles), the distance of Poldhu to Newfoundland. By 1903, the Marconi Company was carrying regular transatlantic news transmissions.

On 16 March 1905 he married Beatrice O'Brien, daughter of Edward Donough O'Brien, 14th Baron Inchiquin, Ireland. They had three daughters, one of whom lived only a few weeks, and one son. They divorced later. Marconi did not achieve fully reliable transatlantic communication until 1907.

He was the founder of the Marconi Corporation and the joint 1909 recipient of the Nobel Prize in Physics along with Karl Ferdinand Braun. During World War I, Marconi was in charge of the Italian wireless service. Marconi developed shortwave secret communication transmissions during this time.

Later years

Cover of Time Magazine (December 6, 1926)

In 1901, Marconi built a station near Wellfleet, MA. It was first called CC (Cape Cod), then MCC (Marconi Cape Cod) and finally WCC when the US government issued "W" call letters to stations east of the Mississippi. In 1903, from this station, Marconi sent the famous message from the President of the US to the King of England. This message was sent directly from Welfleet to England,without being relayed via Glace Bay, Nova Scotia (Which was another Marconi station). During WWI, all radio stations went off the air. When the war was over, Marconi had planned to move the station to Chatham. This was mainly because the ocean had eroded the cliff where the Welfleet station stood. Reportedly, the U.S. Government was worried about foreign ownership of radio stations.

Marconi was forced to sell all his interests in the US to the RCA Corp. WCC remained for several years, was sold to MCI and was finally shut down. In 1911, Marconi receives the patent GB13020, "Installations for wireless telegraphy". In 1914 Marconi built Chatham Radio WCC in Chatham Cape Cod, which would become the busiest ship to shore radio station for most of the twentieth century.

In 1920 Marconi's Chelmsford factory was the location of the first officially publicised sound broadcasts in the UK, one of them featuring Dame Nellie Melba. In 1922 the World's first regular wireless broadcasts for entertainment commenced from the Marconi Research Centre at Writtle near Chelmsford. Marconi joined the Italian fascist party in 1923. Benito Mussolini made Marconi President of the Accademia d'Italia, which also made him a member of the Fascist Grand Council. He made fascist speeches on the radio in a number of countries.

On 15 June 1927 he married Maria Cristina Bezzi-Scali; Mussolini was best man. Their daughter was named Maria Elettra Elena Anna Marconi. Marconi died in Rome on 20 July 1937.

Who invented the radio?

Marconi's claim that he invented radio was always disputed by Nikola Tesla and Alexander Popov.

Marconi did develop a practical model and was responsible for the first successful exploitation of the invention practically at the same time with Alexander Popov, who described his findings in a paper published in 1895. Popov publicly demonstrated the transmission of radio waves between different campus buildings to the St Petersburg Physical Society in March 1896. Actually, Marconi publicly demonstrated his system several months later, in September. Upon learning about Marconi's experiments, Popov effected ship-to-shore communication over a distance of 6 miles in 1898 and 30 miles in 1899. He died in 1905 and his claim was not pressed by the Russian government until 40 years later.

Tesla initially held the rights to radio, but the US Patent Office reversed its decision and awarded Marconi the patent for radio. Tesla fought to re-acquire his radio patent. A lawsuit regarding this was resolved by American courts in Tesla's favor (1943). This decision was based on the fact that there was prior work existing before the establishment of Marconi's patent (developed by Tesla). At the time, the United States Army was involved in a patent infringement lawsuit with Marconi's company regarding radio, leading some to posit that the government granted Tesla the patent on order to nullify any claims Marconi would have to compensation (as, some posit, the government's initial reversal to grant Marconi the patent right in order to nullify any claims Tesla had for compensation).

Another pioneer of wireless communication was Prof Jagdish Bose. In 1894, Bose ignited gunpowder and rang a bell at a distance using electromagnetic waves, confirming that communication signals can be sent without using wires.

Patents

  • U.S. Patent 586193
  • U.S. Patent 624516
  • U.S. Patent 627650
  • U.S. Patent 647007
  • U.S. Patent 647008
  • U.S. Patent 647009
  • U.S. Patent 650109
  • U.S. Patent 650110
  • U.S. Patent 668315
  • U.S. Patent 676332
  • U.S. Patent 763772

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In 1894, Bose ignited gunpowder and rang a bell at a distance using electromagnetic waves, confirming that communication signals can be sent without using wires. 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. Another pioneer of wireless communication was Prof Jagdish Bose. his tank. At the time, the United States Army was involved in a patent infringement lawsuit with Marconi's company regarding radio, leading some to posit that the government granted Tesla the patent on order to nullify any claims Marconi would have to compensation (as, some posit, the government's initial reversal to grant Marconi the patent right in order to nullify any claims Tesla had for compensation). While most of Leonardo's inventions were not realized, many were technologically feasible as it was demonstrated recently, e.g. This decision was based on the fact that there was prior work existing before the establishment of Marconi's patent (developed by Tesla). 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].

A lawsuit regarding this was resolved by American courts in Tesla's favor (1943). They remained obscure until the 19th century, and were not directly of value to the development of science and technology. Tesla fought to re-acquire his radio patent. 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). Tesla initially held the rights to radio, but the US Patent Office reversed its decision and awarded Marconi the patent for radio. 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. He died in 1905 and his claim was not pressed by the Russian government until 40 years later. In his years in the Vatican, he planned an industrial use of solar power, by employing concave mirrors to heat water.

Upon learning about Marconi's experiments, Popov effected ship-to-shore communication over a distance of 6 miles in 1898 and 30 miles in 1899. 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. Actually, Marconi publicly demonstrated his system several months later, in September. even though he later held war to be the worst of human activities. Popov publicly demonstrated the transmission of radio waves between different campus buildings to the St Petersburg Physical Society in March 1896. 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. Marconi did develop a practical model and was responsible for the first successful exploitation of the invention practically at the same time with Alexander Popov, who described his findings in a paper published in 1895. It was never built, but Leonardo's vision was resurrected in 2001 when a smaller bridge based on his design was constructed in Norway.

Marconi's claim that he invented radio was always disputed by Nikola Tesla and Alexander Popov. The bridge was intended to span an inlet at the mouth of the Bosphorus known as the Golden Horn. Marconi died in Rome on 20 July 1937. 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. Their daughter was named Maria Elettra Elena Anna Marconi. On January 3, 1496 he unsuccessfully tested a flying machine he had constructed. On 15 June 1927 he married Maria Cristina Bezzi-Scali; Mussolini was best man. 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.

He made fascist speeches on the radio in a number of countries. It is not known if an attempt was made to build the device. Benito Mussolini made Marconi President of the Accademia d'Italia, which also made him a member of the Fascist Grand Council. 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. Marconi joined the Italian fascist party in 1923. His study of human anatomy led also to the design of the first known robot in recorded history. In 1922 the World's first regular wireless broadcasts for entertainment commenced from the Marconi Research Centre at Writtle near Chelmsford. Because he actively searched for bodily deformed people to paint them, he is also considered to be the beginner of caricature.

In 1920 Marconi's Chelmsford factory was the location of the first officially publicised sound broadcasts in the UK, one of them featuring Dame Nellie Melba. 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. In 1914 Marconi built Chatham Radio WCC in Chatham Cape Cod, which would become the busiest ship to shore radio station for most of the twentieth century. He not only studied the anatomy of human, but also of other beings. In 1911, Marconi receives the patent GB13020, "Installations for wireless telegraphy". He was a master of topographic anatomy. WCC remained for several years, was sold to MCI and was finally shut down. He often drew muscles and tendons of the cervical muscles and of the shoulder.

Marconi was forced to sell all his interests in the US to the RCA Corp. He was one of the firsts who drew the fetus in the intrauterine position (he wished to learn about "the miracle of pregnancy"). Government was worried about foreign ownership of radio stations. He drew many images of the lungs, mesentery, urinary tract, sex organs, and even coitus. Reportedly, the U.S. He was also able to represent exceptionally well the human skull and cross-sections of the brain (transversal, sagittal, and frontal). This was mainly because the ocean had eroded the cliff where the Welfleet station stood. He also studied the inclination of pelvis and sacrum and stressed that sacrum was not uniform, but composed of five vertebrae.

When the war was over, Marconi had planned to move the station to Chatham. Leonardo drew many images of the human skeleton, and was the first to describe the double S form of the backbone. During WWI, all radio stations went off the air. However, his book was published only in 1580 (long after his death) under the heading Treatise on painting. This message was sent directly from Welfleet to England,without being relayed via Glace Bay, Nova Scotia (Which was another Marconi station). Together with Marcantonio, he prepared to publish a theoretical work on anatomy and made more than 200 drawings. In 1903, from this station, Marconi sent the famous message from the President of the US to the King of England. In 30 years, Leonardo dissected 30 male and female corpses of different ages.

It was first called CC (Cape Cod), then MCC (Marconi Cape Cod) and finally WCC when the US government issued "W" call letters to stations east of the Mississippi. From 1510 to 1511 he collaborated with the doctor Marcantonio della Torre (1481 to 1511). In 1901, Marconi built a station near Wellfleet, MA. Later he dissected also in Milano in the hospital Maggiore and in Rome in the hospital Santo Spirito (the first mainland Italian hospital). Marconi developed shortwave secret communication transmissions during this time. As he became successful as an artist, he was given permission to dissect human corpses at the hospital Santa Maria Nuova in Florence. During World War I, Marconi was in charge of the Italian wireless service. 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.

He was the founder of the Marconi Corporation and the joint 1909 recipient of the Nobel Prize in Physics along with Karl Ferdinand Braun. 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. Marconi did not achieve fully reliable transatlantic communication until 1907. Since he lacked formal education in Latin and mathematics, contemporary scholars mostly ignored Leonardo the scientist. They divorced later. Throughout his life, he planned a grand encyclopedia based on detailed drawings of everything. They had three daughters, one of whom lived only a few weeks, and one son. 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.

On 16 March 1905 he married Beatrice O'Brien, daughter of Edward Donough O'Brien, 14th Baron Inchiquin, Ireland. 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. By 1903, the Marconi Company was carrying regular transatlantic news transmissions. He was left-handed and used mirror writing throughout his life. However there is little doubt that by February 1902, Marconi's apparatus was fairly reliably receiving complete messages at 2500 km (1550 miles) at night and 1100 km (700 miles) by day, and usually picked up a special test signal at 3400 km (2100 miles), the distance of Poldhu to Newfoundland. These notes were made and maintained through Leonardo's travels through Europe, during which he made continual observations of the world around him. Dr Jack Belrose has recently contested this, however, based on theoretical work as well as an actual reenactment of the experiment; he believes that Marconi heard only random atmospheric noise and mistook it for the signal. 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.

To reach Newfoundland the signal would have to bounce off the ionosphere twice. Chiaroscuro is the technique of modelling and defining forms through contrasts of light and shadow. The message received was three dots, the Morse code for the letter S. It is characterized by subtle transitions between colour areas, creating an atmospheric haze or smoky effect. The transmitting station in Poldhu, Cornwall used a spark-gap transmitter to produce a signal with a frequency of approximately 500kHz and a power of 100 times more than any radio signal previously produced (a maximum time-averaged power of 35 kilowatts, but with a peak pulse power of several tens of megawatts [1]). One of them, a colour shading technique called sfumato, used a series of custom-made glazes by Leonardo. This was surprising at the time as it was thought by the mainstream that a radio signal could only be transmitted in the line of sight. Leonardo pioneered new painting techniques in many of his pieces.

He received the first trans-Atlantic radio signal on 12 December 1901 at Signal Hill in St John's, Newfoundland (now in Canada) using a 400-foot kite-supported antenna for reception. After producing a fantastic variety of studies in preparation for the work, he left the city, with the mural unfinished due to technical difficulties. He made a wireless transmission across the water from Ballycastle (Northern Ireland) to Rathlin Island in 1898. 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. Marconi made the first wireless transmission across water May 13th 1897, from Lavernock Point, South Wales to Flat holm Island. (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. In July 1897, Marconi formed the London based Wireless Telegraph Trading Signal Company (later renamed the Marconi Wireless Telegraph Company), which opened the World's first "wireless" factory in Hall Street, Chelmsford, England in 1898, employing around 50 people. Because of war with France, the project was never finished.

Marconi was awarded the patent for Radio with British Patent GB12039, "Improvements in transmitting electrical impulses and signals and in apparatus there-for" on 2 July 1897 (sometimes recognised as the World's first patent). 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". Marconi sent radio signals of 300 meters (and up to 6 Kilometers) on Salisbury Plain (England) in 1896. None of his sculptures have survived. Louis and the Franklin Institute in Philadelphia. Of his paintings, only seventeen survived. Although many scientists and inventors contributed to the invention of wireless telegraphy, including Oliver Lodge, Hans Christian Ørsted, Michael Faraday, Heinrich Rudolf Hertz, Jagadis Chandra Bose, Alexander Popov, Nikola Tesla, Thomas Alva Edison, Nathan Stubblefield, and others, Marconi's practical system achieved widespread use, so he is often credited as the "father of radio." Marconi's system was based primarily on Nikola Tesla's system, theoretically demonstrated during a widely known lecture titled On Light and Other High Frequency Phenomena, presented before a meeting of the National Electric Light Association in St. After extensive, ambitious plans and many drawings, the painting was left unfinished and Leonardo left for Milan.

He was educated in Florence and, later, in Livorno. For example, in 1481 he was commissioned to paint the altarpiece The Adoration of the Magi. Marconi was born near to Bologna, Italy, the second son of Giuseppe Marconi, an Italian landowner, and his Irish wife, Annie Jameson, granddaughter of the founder of the Jameson & Sons Distillery on 25 April 1874. Leonardo often planned grandiose paintings with many drawings and sketches, only to leave the projects unfinished. . 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. Marconi was President of the Accademia d'Italia and a member of the Fascist Grand Council of Italy. It is well known that Leonardo made extensive use of many tricks in this painting, including the so-called Golden Ratio.

Guglielmo Marconi (25 April 1874 – 20 July 1937) was an Italian electrical engineer and Nobel laureate, known for the development of a practical wireless telegraphy system commonly known as the "radio". 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. Patent 763772. He most likely kept it with him at all times, and did not travel without it. U.S. 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. Patent 676332. 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.

U.S. Melzi was his principal heir and executor, but Salai was not forgotten: he received half of Leonardo's vineyard. Patent 668315. He was buried in the Chapel of Saint-Hubert in the castle of Amboise. U.S. According to his wish, 60 beggars followed his casket. Patent 650110. Leonardo da Vinci died at Clos Lucé, France, on 2nd May, 1519.

U.S. Francis became a close friend. Patent 650109. In 1518 Salai left Leonardo and returned to Milan, where he eventually perished in a duel. U.S. 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"). Patent 647009. In 1516, he entered Francis' service, being given the use of the manor house Clos Lucé (also called "Cloux") next to the king's residence at the royal Chateau Amboise.

U.S. 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. Patent 647008. However, he was probably of pivotal importance in the relocation of David (in Florence), one of Michelangelo's masterpieces, against the artist's will. U.S. 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. Patent 647007. In 1506 he returned to Milan, now in the hands of Maximilian Sforza after Swiss mercenaries had driven out the French.

U.S. 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. Patent 627650. 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. U.S. 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. Patent 624516. When the French returned under Louis XII in 1498, Milan fell without a fight, overthrowing Sforza [4].

U.S. 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. Patent 586193. From around 1482 to 1499, Ludovico Sforza, Duke of Milan [3], employed Leonardo and permitted him to operate his own workshop complete with apprentices. U.S. He was also a respected judge on matters of beauty and elegance, particularly in the creation of pageants. Vasari reports a story that as a young man in Florence he often bought caged birds just to release them from captivity.

Under the heading, "Of the beasts from whom cheese is made," he answers, "the milk will be taken from the tiny children." [2]). 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. 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. 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.

Melzi, however, became Leonardo's pupil and life companion. Though Salai was always introduced as Leonardo's "pupil", he never produced any work of artistic merit. Salai eventually accepted Melzi's continued presence and the three undertook journeys throughout Italy. In 1506, Leonardo met Count Francesco Melzi, the 15 year old son of a Lombard aristocrat.

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. Gian entered Leonardo's household around 1488 at the age of 10, becoming his servant and assistant for the next thirty years. One of his lovers is thought to have been Gian Giacomo Caprotti da Oreno (nicknamed Salai (Little Devil)). It has therefore been widely assumed that he was a homosexual.

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). There is no evidence that Leonardo was ever intimately involved with any woman, nor in a close friendship with one. 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?". Modern critics contend that Leonardo's love of boys was well-known even in the sixteenth century.

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. After two months in jail, he was acquitted because no witnesses stepped forward. 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. Later, he became an independent painter in Florence.

In this role, Leonardo also worked with Lorenzo di Credi and Pietro Perugino. 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. Leonardo grew up with his father in Florence, where he started drawing and painting. Leonardo signed his works "Leonardo" or "Io, Leonardo" ("I, Leonardo").

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". It has been suggested, albeit on scanty evidence [1], that she was a Middle Eastern slave owned by Piero. 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. .

Renaissance humanism saw no mutually exclusive polarities between sciences and arts. In addition, he helped advance the study of anatomy, astronomy, and civil engineering. He is also known for designing many inventions that anticipated modern technology, although few of these designs were constructed in his lifetime. Leonardo is famous for his masterly paintings, such as The Last Supper and Mona Lisa.

He has been described as the archetype of the "Renaissance man" and as a universal genius. Leonardo da Vinci (April 15, 1452 – May 2, 1519) was an Italian Renaissance architect, musician, anatomist, inventor, engineer, sculptor, geometer, and painter. ISBN 8809038916 (hardback). Giunti.

Leonardo da Vinci: Artist, Scientist, Inventor. Simona Cremante (2005). ISBN 0-140-29681-6. Penguin.

Leonardo da Vinci, The Flights of the mind. Charles Nicholl (2005). Dépot légal 4° trimestre 1965. Somogy.

Léonard de Vinci, L'homme et son oeuvre. Fred Bérence (1965). ISBN 3822817341 (hardback). Taschen.

Leonardo Da Vinci: The Complete Paintings and Drawings. Frank Zollner & Johannes Nathan (2003). A reprint of the original 1883 edition. 2 volumes.

ISBN 0486225720 and ISBN 0486225739 (paperback). Dover. The Notebooks of Leonardo da Vinci. Jean Paul Richter (1970).

ISBN 0806513500 (paperback). Carol Publishing Group. The 100. Hart (1992).

Michael H. ISBN 0385323816 (paperback). Delacorte Press. How to Think Like Leonardo da Vinci: Seven Steps to Genius Every Day.

Gelb (1998). Michael J. The cartoon The Tick features Leonardo in Leonardo DaVinci and his Fightin' Genius Time Commandos! (Season 2, Episode 17, 1995). Peter Barnes's Leonardo's Last Supper centres on Leonardo being "resurrected" in a filthy charnel house after being prematurely declared dead.

The movie Hudson Hawk starring Bruce Willis and Danny Aiello revolves around Leonardo da Vinci's inventions. The movie Ever After from 1998 starring Drew Barrymore and Patrick Godfrey as Leonardo da Vinci. Leonardo in the Teenage Mutant Ninja Turtles was named after Leonardo da Vinci. 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).

The Dargaud cartoon character Léonard by Turk and De Groot. Terry Pratchett's character Leonard of Quirm is a pastiche of Leonardo. 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. 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.".

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. Dann has his genius protagonist actually create his flying machine. 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.