Guglielmo Marconi

Born 25 April 1874
Palazzo Marescalchi,
Bologna,
Italy
Died 20 July 1937 (aged 63)
Rome, Italy
Alma mater University of Bologna
Known for
Radio
Notable awards
Nobel Prize for Physics (1909)
Signature
Guglielmo Marconi (Italian pronunciation:
[ɡuʎˈʎɛːlmo marˈkoːni]; 25 April 1874 – 20 July 1937) was an
Italian inventor, known as the father of long distance
radio transmission[1] and for his development of
Marconi's law and a
radio telegraph system. Marconi is often credited as the
inventor of radio, and indeed he shared the 1909
Nobel Prize in Physics with
Karl Ferdinand Braun "in recognition of their contributions to the development of wireless telegraphy".
[2][3][4] Much of Marconi's work in radio transmission was built upon previous experimentation
[5] and the commercial exploitation of ideas by others such as
Hertz,
Maxwell,
Faraday,
Popov,
Lodge,
Fessenden,
Stone,
Bose, and
Tesla. As an entrepreneur, businessman, and founder of the
The Wireless Telegraph & Signal Company in 1897, Marconi succeeded in making a commercial success of radio by innovating and building on the work of previous experimenters and physicists.
[6][7] In 1924, he was ennobled as
Marchese Marconi.
Biography
Early years
Marconi was born in
Bologna on April 25, 1874, the second son of Giuseppe Marconi, an
Italian landowner, and his
Irish wife, Annie Jameson, daughter of Andrew Jameson of Daphne Castle in the County Wexford, Ireland and granddaughter of John Jameson, founder of whiskey distillers
Jameson & Sons. Marconi was educated privately in Bologna in the lab of
Augusto Righi, in Florence at the Istituto Cavallero and, later, in Livorno. As a child Marconi did not do well in school.
[8] Baptized as a
Catholic, he was also a member of the
Anglican Church, being married into it; however, he still received a Catholic annulment.
Radio work
During his early years, Marconi had an interest in science and
electricity. One of the scientific developments during this era came from
Heinrich Hertz, who, beginning in 1888, demonstrated that one could produce and detect
electromagnetic radiation—now generally known as
radio waves, at the time more commonly called "Hertzian waves" or "aetheric waves". Hertz's death in 1894 brought published reviews of his earlier discoveries, and a renewed interest on the part of Marconi. He was permitted to briefly study the subject under
Augusto Righi, a
University of Bologna physicist and neighbour of Marconi who had done research on Hertz's work.
Early experimental devices
Marconi began to conduct
experiments, building much of his own equipment in the attic of his home at the Villa Griffone in
Pontecchio,
Italy, with the help of his butler Mignani. His goal was to use radio waves to create a practical system of "
wireless telegraphy"—i.e. the transmission of telegraph messages without connecting wires as used by the
electric telegraph. This was not a new idea—numerous investigators had been exploring wireless telegraph technologies for over 50 years, but none had proven technically and commercially successful. Marconi's system had the following components:
[9]A
wire or capacity area placed at a height above the ground;
A
coherer receiver, which was a modification of
Edouard Branly's original device, with refinements to increase sensitivity and reliability;
A
telegraph key to operate the transmitter to send short and long pulses, corresponding to the dots-and-dashes of
Morse code; and
A telegraph register, activated by the
coherer, which recorded the received
Morse code dots and dashes onto a roll of paper tape.
Similar configurations using spark-gap transmitters plus coherer-receivers had been tried by others, but many were unable to achieve transmission ranges of more than a few hundred metres.
Marconi, just twenty years old, began his first experiments working on his own with the help of his butler Mignani. In the summer of 1894, he built a storm alarm made up of a battery, a coherer, and an electric bell, which went off if there was lightning. Soon after he was able to make a bell ring on the other side of the room by pushing a telegraphic button on a bench.
[10]
One night in December, Guglielmo woke his mother up and invited her into his secret workshop and showed her the experiment he had created. The next day he also showed his father, who, when he was certain there were no wires, gave his son all of the money he had in his wallet so Guglielmo could buy more materials. In the summer of 1895 he moved his experimentation outdoors. After increasing the length of the transmitter and receiver antennas, and arranging them vertically, and positioning the antenna so that it touched the ground, the range increased significantly.
[11] Soon he was able to transmit signals over a hill, a distance of approximately 2.4 kilometres (1.5 mi).
[12] By this point he concluded that with additional funding and research, a device could become capable of spanning greater distances and would prove valuable both commercially and militarily.
Marconi wrote to the ministry of Post and Telegraphs, which at the time was under the direction of the honorable Pietro Lacava, explaining his wireless telegraph machine and asking for funding. He never received a response to his letter which was eventually dismissed by the minister who wrote "to the Longara" on the document, referring to the insane asylum on via della Lungara in Rome.
[13] In 1896, Marconi spoke with his family friend Carlo Gardini, the United States consulate in Bologna, about leaving Italy to go to England. Gardini wrote a letter to the Ambassador of Italy in London, Annibale Ferrero, explaining who Marconi was and about this extraordinary discoveries. In his response, ambassador Ferrero advised them not to reveal the results until after they had obtained the copyrights. He also encouraged him to come to England where he believed it would be easier to find the necessary funds to convert the findings from Marconi's experiment into a practical use. Finding little interest in his work in Italy, in early 1896 at the age of 21, Marconi traveled to London, accompanied by his mother, to seek support for his work; Marconi spoke fluent English in addition to Italian. While there, he gained the interest and support of
William Preece, the Chief Electrical Engineer of the British Post Office. The apparatus that Marconi possessed at that time was similar to that of one in 1882 by
A. E. Dolbear, of
Tufts College, which used a spark coil generator and a
carbon granular rectifier for reception.
[14] A plaque
[15] on the outside of
BT Centre commemorates Marconi's first public transmission of wireless signals from that site.
[16] A series of demonstrations for the British government followed—by March 1897, Marconi had transmitted Morse code signals over a distance of about 6 kilometres (3.7 mi) across the
Salisbury Plain. On 13 May 1897, Marconi sent the first ever wireless communication over open sea. It transversed the
Bristol Channel from
Lavernock Point(
South Wales) to
Flat Holm Island, a distance of 6 kilometres (3.7 mi). The message read "Are you ready".
[17] The receiving equipment was almost immediately relocated to
Brean Down Fort on the Somerset coast, stretching the range to 16 kilometres (9.9 mi).
Impressed by these and other demonstrations, Preece introduced Marconi's ongoing work to the general public at two important London lectures: "Telegraphy without Wires", at the
Toynbee Hall on 11 December 1896; and "Signaling through Space without Wires", given to the
Royal Institution on 4 June 1897.
Numerous additional demonstrations followed, and Marconi began to receive international attention. In July 1897, he carried out a series of tests at
La Spezia in his home country, for the Italian government. A test for Lloyds between
Ballycastle and
Rathlin Island, Ireland, was conducted on 6 July 1898. The
English channel was crossed on 27 March 1899, from
Wimereux, France to
South Foreland Lighthouse, England, and in the autumn of 1899, the first demonstrations in the United States took place, with the reporting of the
America's Cup international yacht races at New York.
Marconi sailed to the United States at the invitation of the New York Herald newspaper to cover the
America's Cup races off Sandy Hook, NJ. The transmission was done aboard the SS Ponce, a passenger ship of the Porto Rico Line.
[18] Marconi left for England on 8 November 1899 on the
American Line's
SS St. Paul, and he and his assistants installed wireless equipment aboard during the voyage. On 15 November the St. Paul became the first ocean liner to report her imminent arrival by wireless when Marconi's Needles station contacted her sixty-six nautical miles off the English coast.
Transatlantic transmissions
“ See if you can hear anything, Mr. Kemp!
[19] ”
Around the turn of the 19th to 20th century, Marconi began investigating the means to signal completely across the Atlantic, in order to compete with the
transatlantic telegraph cables. Marconi established a wireless transmitting station at Marconi House, Rosslare Strand, Co. Wexford in 1901 to act as a link between Poldhu in Cornwall and Clifden in Co. Galway. He soon made the announcement that on 12 December 1901, using a 152.4-metre (500 ft) kite-supported antenna for reception, the message was received at
Signal Hill in
St John's,
Newfoundland (now part of Canada) signals transmitted by the company's new high-power station at
Poldhu,
Cornwall. The distance between the two points was about 3,500 kilometres (2,200 mi). Heralded as a great scientific advance, there was—and continues to be—some skepticism about this claim, partly because the signals had been heard faintly and sporadically. There was no independent confirmation of the reported reception, and the transmissions, consisting of the Morse code letter S sent repeatedly, were difficult to distinguish from atmospheric noise. (A detailed technical review of Marconi's early transatlantic work appears in John S. Belrose's work of 1995.)
[20] The Poldhu transmitter was a two-stage circuit.
[21][22] The first stage operated at lower voltage and provided the energy for the second stage to spark at a higher voltage.
Nikola Tesla, a rival in transatlantic transmission, stated after being told of Marconi's reported transmission that "Marconi [... was] using seventeen of
my patents."
[23][24]


Marconi operating apparatus similar to that used by him to transmit first wireless signal across Atlantic, 1901.
Feeling challenged by
skeptics, Marconi prepared a better organized and documented test. In February 1902, the SS Philadelphiasailed west from Great Britain with Marconi aboard, carefully recording signals sent daily from the Poldhu station. The test results produced coherer-tape reception up to 2,496 kilometres (1,551 mi), and audio reception up to 3,378 kilometres (2,099 mi). The maximum distances were achieved at night, and these tests were the first to show that for
mediumwave and
longwave transmissions, radio signals travel much farther at night than in the day. During the daytime, signals had only been received up to about 1,125 kilometres (699 mi), less than half of the distance claimed earlier at Newfoundland, where the transmissions had also taken place during the day. Because of this, Marconi had not fully confirmed the Newfoundland claims, although he did prove that radio signals could be sent for hundreds of kilometres, despite some scientists' belief they were essentially limited to line-of-sight distances.
On 17 December 1902, a transmission from the Marconi station in
Glace Bay, Nova Scotia, Canada, became the first radio message to cross the Atlantic from North America. In 1901, Marconi built a station near
South Wellfleet, Massachusetts that on January 18, 1903 sent a message of greetings from
Theodore Roosevelt, the President of the United States, to
King Edward VII of the United Kingdom, marking the first transatlantic radio transmission originating in the United States. This station also was one of the first to receive the
distress signals coming from the
RMS Titanic. However, consistent transatlantic signalling was difficult to establish.
Marconi began to build high-powered stations on both sides of the Atlantic to communicate with ships at sea, in competition with other inventors. In 1904 a commercial service was established to transmit nightly news summaries to subscribing ships, which could incorporate them into their on-board newspapers. A regular transatlantic radio-telegraph service was finally begun on 17 October 1907
[25] between
Clifden Ireland and
Glace Bay, but even after this the company struggled for many years to provide reliable communication.
Titanic
The two radio operators aboard the
Titanic—
Jack Phillips and
Harold Bride—were not employed by the
White Star Line, but by the
Marconi International Marine Communication Company. Following the sinking of the ocean liner, survivors were rescued by the
RMS Carpathia of the
Cunard Line.
[26] Also employed by the Marconi Company was
David Sarnoff, the only person to receive the names of survivors immediately after the disaster via wireless technology. Wireless communications were reportedly maintained for 72 hours between the Carpathia and Sarnoff,
[27] but Sarnoff's involvement has been questioned by some modern historians. When the Carpathia docked in New York, Marconi went aboard with a reporter from
The New York Times to talk with Bride, the surviving operator.
[26] On 18 June 1912, Marconi gave evidence to the Court of Inquiry into the loss of the Titanic regarding the marine telegraphy's functions and the procedures for emergencies at sea.
[28] Britain's postmaster-general summed up, referring to the Titanic disaster, "Those who have been saved, have been saved through one man, Mr. Marconi...and his marvelous invention."
Continuing work
“ Have I done the world good, or have I added a menace?
[29] ”
Over the years, the Marconi companies gained a reputation for being technically conservative, in particular by continuing to use inefficient spark-transmitter technology, which could only be used for radiotelegraph operations, long after it was apparent that the future of radio communication lay with
continuous-wave transmissions, which were more efficient and could be used for audio transmissions. Somewhat belatedly, the company did begin significant work with continuous-wave equipment beginning in 1915, after the introduction of the oscillating vacuum tube (valve). In 1920, employing a vacuum tube transmitter, the
Chelmsford Marconi factory was the location for the first entertainment radio
broadcasts in the United Kingdom—one of these featured Dame
Nellie Melba. In 1922 regular entertainment broadcasts commenced from the
Marconi Research Centre at
Writtle.
Later years
Marconi died in Rome in 1937 at age 63 following a series of
heart attacks, and Italy held a
state funeral for him. As a tribute, all radio stations throughout the world observed two minutes of silence. His remains are housed in the Villa Griffone at
Sasso Marconi,
Emilia-Romagna, which assumed that name in his honour in 1938.
Personal life
Marconi had a brother, Alfonso, and a stepbrother, Luigi. On 16 March 1905, Marconi married the Hon. Beatrice O'Brien (1882–1976), a daughter of Edward Donough O'Brien, 14th
Baron Inchiquin. They had three daughters, Degna (1908–1998), Gioia (1916–1996), and Lucia (born and died 1906), and a son, Giulio, 2nd Marchese Marconi (1910–1971). The Marconis divorced in 1924, and, at Marconi's request, the marriage was annulled on 27 April 1927, so he could remarry.
[30] Beatrice Marconi married her second husband, Liborio Marignoli, Marchese di Montecorona, on 3 March 1924 and had a daughter, Flaminia.
[31]
On 12 June 1927 (religious 15 June), Marconi married Maria Cristina Bezzi-Scali (1900—1994), only daughter of Francesco, Count Bezzi-Scali. Fascist dictator
Benito Mussolini was Marconi's
best man at the wedding.
[32][33] They had one daughter, Maria Elettra Elena Anna (born 1930), who married Prince Carlo Giovannelli (born 1942) in 1966; they later divorced.
For unexplained reasons, Marconi left his entire fortune to his second wife and their only child, and nothing to the children of his first marriage.
[34]
Marconi wanted to personally introduce in 1931 the first radio broadcast of a Pope,
Pius XI, announcing at the microphone: "With the help of God, who places so many mysterious forces of nature at man's disposal, I have been able to prepare this instrument which will give to the faithful of the entire world the joy of listening to the voice of the Holy Father".
[36]
Legacy and honours
Honours and awards
In 1924, he was made a
marquess by King Victor Emmanuel III., thus becoming Marchese Marconi.
The Dutch radio academy bestows the
Marconi Awards annually for outstanding radio programmes, presenters and stations; the National Association of Broadcasters (US) bestows the annual
NAB Marconi Radio Awards also for outstanding radio programs and stations.
Marconi was inducted into the National Broadcasters Hall of Fame in 1977.
[38]A commemorative
British two pound coin was released in 2001 celebrating the 100th anniversary of Marconi's first wireless communication.
A commemorative silver 5 EURO coin was issued by Italy in 2009 honouring the centennial of Marconi's Nobel Prize.
Marconi's early experiments in wireless telegraphy were the subject of two
IEEE Milestones; one in Switzerland in 2003
[39] and most recently in Italy in 2011.
[40]
Tributes
The premier collection of Marconi artifacts was held by The General Electric Company, p.l.c. (GEC) of the United Kingdom which later renamed to Marconi plc and Marconi Corporation plc. In December 2004 the extensive Marconi Collection, held at the former Marconi Research Centre at
Great Baddow,
Chelmsford,
Essex UK was
gifted to the Nation by the Company via the University of Oxford. This consisted of the BAFTA award-winning
MarconiCalling website, some 250+ physical artifacts and the massive ephemera collection of papers, books, patents and many other items. The artifacts are now held by
The Museum of the History of Science and the ephemera Archives by the nearby
Bodleian Library. The latest release, following three years work at the Bodleian, is the
Online Catalogue to the Marconi Archives, released in November 2008.
Ira Gershwin's lyrics to "
They All Laughed" include the line, "They told Marconi wireless was a phony."
The band Tesla references him in "Edison's Medicine" lyrics: They'll sell you on Marconi, familiar, but a phony."
The 1979 play 'The Man From Mukinupin' by
Dorothy Hewett makes several references to Marconi by the character The Flasher, who imagines he is communicating with Marconi through a box of matches. "Marconi the great one, speak to me!", "Marconi, Marconi, must I kill?" and "Marconi says I must not frighten the ladies..."
The
Bermuda rig, developed in the 17th century by Bermudians, became ubiquitous on sailboats around the world in the 20th century. The tall masts and triangular fore-and-aft sails reminded some people of Marconi's wireless towers, hence the rig became known also as the Marconi rig.
Places and organizations named after Marconi
Ireland
Marconi Park, Ballycastle
Italy
Guglielmo Marconi Airport (IATA: BLQ – ICAO: LIPE), of Bologna, Italy, is named after Marconi, its native son. "Guglielmo Marconi" University in
Rome, Italy.(Università degli Studi "Guglielmo Marconi" di Roma). Via Guglielmo Marconi in virtually all Italian towns and villages
Australia
Canada
The 'Marconi's Wireless Telegraph Company of Canada', of
Montreal, Canada, was created in 1903 by Guglielmo Marconi.
[41] In 1925 the company was renamed to the 'Canadian Marconi Company', which was acquired by
English Electric in 1953.
[41] The company name changed again to
CMC Electronics Inc. (French: CMC Électronique) in 2001.
People's Republic of China
Israel
Marconi Street in the city of
Haifa.
United Kingdom
United States
Marconiville section of the town of
CopiagueMarconi Conference Center and State Historic Park, Marshall, California. Site of the transoceanic Marshall Receiving Station.
Marconi monument at Fulton intersection, Sacramento, CA
Marconi Boulevard in Rocky Point, New York. His original radio shack is found along that road at the Frank J. Carasiti Elementary School in Rocky Point.
Piazza Guglielmo Marconi, northeast sector of the intersection of Atwood Avenue and Plainfield Street, Johnston, Rhode Island
[42]Mexico
Guillermo Marconi Street, in Mexico City.