Guglielmo Giovanni Maria Marconi, 1st Marquess (25 April 1874 – 20 July 1937), was an Italian radio engineer, inventor, and politician. He is known for developing a practical system for sending messages using radio waves. This work earned him recognition as a key inventor of radio. He shared the 1909 Nobel Prize in Physics with Ferdinand Braun for their contributions to wireless telegraphy. His discoveries helped create the basis for radio, television, and modern wireless communication systems.

As a businessman, Marconi founded The Wireless Telegraph & Signal Company (later renamed the Marconi Company) in the United Kingdom in 1897. In 1929, King Victor Emmanuel III honored him by granting him the title of marquess (Italian: marchese). In 1931, he established Vatican Radio for Pope Pius XI.

Early life and ancestry

Guglielmo Giovanni Maria Marconi was born on April 25, 1874, in Palazzo Dall'Armi Marescalchi in Bologna, Italy. He was the son of Giuseppe Marconi, an Italian noble landowner from Porretta Terme who lived in the countryside of Pontecchio, and his second wife, Annie Jameson, who was the granddaughter of John Jameson, the founder of Jameson Irish Whiskey.

Giuseppe, who was a widower with a son named Luigi, married Annie on April 16, 1864, in Boulogne-sur-Mer, France. Marconi’s older brother, Alfonso, was born the following year.

Between the ages of two and six, Guglielmo lived with Alfonso and their mother in Bedford, England. His Irish mother helped explain why he was active in Great Britain and Ireland.

On May 4, 1877, when Marconi was three years old, his father decided to become a British citizen. At that time, Marconi could have also chosen to become a British citizen, because both of his parents were British citizens.

Marconi did not attend school during his youth. Instead, he studied chemistry, mathematics, and physics at home with private tutors hired by his parents. His family also hired extra tutors during the winter when they traveled from Bologna to the warmer regions of Tuscany or Florence. An important teacher was Vincenzo Rosa, a high school physics teacher in Livorno. Rosa taught 17-year-old Marconi about physical phenomena and new theories about electricity.

At the age of 18, Marconi returned to Bologna and met Augusto Righi, a physics professor at the University of Bologna who had studied the work of Heinrich Hertz. Righi allowed Marconi to attend university lectures and use the university’s laboratory and library.

Radio work

Have I done the world good, or have I added a menace?

From a young age, Marconi was interested in science and electricity. In the early 1890s, he started working on the idea of "wireless telegraphy," which means sending messages without using wires, unlike the electric telegraph. This idea was not new; many scientists and inventors had studied wireless telegraph technologies for more than 50 years. They used methods like electric conduction, electromagnetic induction, and light signals, but none had successfully made the technology work both technically and commercially. A new development came from Heinrich Hertz, who in 1888 showed that radio waves could be created and detected, based on the work of James Clerk Maxwell. At the time, these waves were called "Hertzian waves," but are now known as radio waves.

Many scientists were interested in radio waves, but they focused on studying the waves themselves, not on using them to send messages. Scientists thought radio waves were like invisible light that could only travel in a straight line, limiting their range to the horizon, like other visual signals. After Hertz died in 1894, his work was reviewed by scientists like Oliver Lodge and Augusto Righi. Righi's article reminded Marconi of the possibility of using radio waves for wireless telegraphy, an idea other inventors had not explored.

At age 20, Marconi began experimenting with radio waves, building much of his equipment in the attic of his home in Italy with the help of his butler, Mignani. He built on Hertz's experiments and, following Righi's advice, used a coherer, a device that changed resistance when exposed to radio waves. In 1894, he created a storm alarm using a battery, coherer, and electric bell that rang when it detected radio waves from lightning.

One night in December 1894, Marconi demonstrated a radio transmitter and receiver to his mother, showing how a bell could ring on the other side of the room when a telegraphic button was pressed. With his father's support, Marconi continued studying the topic and developed devices like portable transmitters and receivers that could send messages over long distances. His system included:

• A simple oscillator or spark-producing transmitter;
• A wire or metal sheet raised above the ground;
• A coherer receiver, improved from Édouard Branly's design;
• A telegraph key to send Morse code signals (dots and dashes);
• A telegraph register that recorded the received signals on paper tape.

In the summer of 1895, Marconi moved his experiments outdoors on his father's estate in Bologna. He tested different antenna shapes but could only send signals up to 800 meters (0.5 miles), a distance Oliver Lodge had predicted as the maximum for radio waves.

A major breakthrough happened in 1895 when Marconi raised his antenna and grounded his equipment, inspired by wired telegraphy techniques. These changes allowed signals to travel up to 2 miles (3.2 km) and over hills. His monopole antenna produced vertically polarized waves that traveled farther than the dipole antennas used by Hertz. Marconi believed his system could be improved with more research and funding, and would be useful for business and military purposes. His setup became the first complete, commercially successful radio transmission system.

Marconi asked the Italian Ministry of Post and Telegraphs, led by Maggiorino Ferraris, for funding but received no response. A story claims the minister wrote "to the Longara" on his letter, referencing an asylum in Rome, but no proof of this exists.

In 1896, Marconi talked to Carlo Gardini, an Italian friend in the U.S., about moving to Great Britain. Gardini wrote a letter to the Italian ambassador in London, Annibale Ferrero, who advised Marconi to get a patent first before sharing his results. He also encouraged Marconi to go to Britain, where he could find support for his work. Finding little interest in Italy, Marconi traveled to London in 1896 with his mother. He spoke fluent English and was met by customs officers who suspected his equipment might be dangerous. His tools were destroyed, but he later gained support from William Preece, the Chief Electrical Engineer of the General Post Office.

Marconi applied for a patent in June 1896, titled "Improvements in Transmitting Electrical Impulses and Signals," which became the first patent for a radio-based communication system. In July 1896, he demonstrated his system to the British government. By March 1897, he sent Morse code signals 3 miles (5 km) across Salisbury Plain. On 13 May 1897, he transmitted the first wireless message over open sea from Flat Holm Island to Lavernock Point, a distance of

Politics and military service

In 1914, Marconi was made a senator in Italy's Senate and received an honorary title from the UK's Royal Victorian Order. The next year, Italy joined the Allied forces in World War I, and Marconi was assigned to manage Italy's military radio operations. He earned the rank of lieutenant in the Royal Italian Army and commander in the Royal Italian Navy. In 1929, King Victor Emmanuel III granted him the title of marquess.

In 1923, Marconi joined the National Fascist Party. In 1930, Prime Minister Benito Mussolini named him president of the Royal Academy of Italy, making him a member of the Fascist Grand Council. He supported fascist ideas and actions, including Italy's invasion of Ethiopia in 1935.

In a speech, Marconi said, "I claim the honor of being the first fascist in radio technology, the first to recognize the value of combining electric signals, just as Mussolini was the first in politics to unite the nation's strengths for Italy's greatness." Records discovered in 2002 revealed that Marconi worked with Mussolini's efforts to prevent Jewish people from joining the Royal Academy during the 1930s.

Death and posthumous

While working on microwave technology, Marconi had nine heart attacks over three years before he died. After the ninth heart attack, he passed away on July 20, 1937, in Rome at the age of 63. A state funeral was held in his honor. As a sign of respect, shops on the street where he lived were closed for national mourning. The next day, at 6:00 p.m., which was the time of the funeral, transmitters worldwide stopped sending signals for two minutes to honor him. The British Post Office also asked all broadcasting ships to remain silent for two minutes in his memory. His remains are kept in the Mausoleum of Guglielmo Marconi in Sasso Marconi, Emilia-Romagna, a place named after him in 1938.

In 1943, Marconi’s steam yacht, Elettra, was taken over and turned into a warship by the German Kriegsmarine. The following year, on January 22, the British Royal Air Force sank the ship. After the war, the Italian government tried to recover the wreckage to rebuild the boat. The wreckage was brought to Italy, but the plan was later stopped. Instead, the wreckage was broken into pieces and given to Italian museums.

On June 21, 1943, the Supreme Court of the United States confirmed a 1935 decision by the United States Court of Claims regarding Marconi’s radio patents. This decision canceled Marconi’s claim that he invented radio and restored earlier patents held by Oliver Lodge, John Stone Stone, and Nikola Tesla. It also clarified the roles of Lodge, Stone, and Tesla in the invention of radio.

Some people believe the high court was trying to cancel a World War I claim by the Marconi Company against the United States government by simply restoring the non-Marconi patents.

Personal life

Guglielmo Marconi was friends with Charles and Florence van Raalte, who owned Brownsea Island, and their daughter, Margherita. In 1904, he met Margherita’s Irish friend, The Hon. Beatrice O'Brien (1882–1976), the daughter of Edward O'Brien, 14th Baron Inchiquin. On March 16, 1905, Guglielmo and Beatrice married and spent their honeymoon on Brownsea Island. They had three daughters: Lucia (born and died in 1906), Degna (1908–1998), and Gioia (1916–1996), and a son, Giulio (1910–1971), who became the 2nd Marquess. In 1913, the family moved to Italy and became part of Rome society. Beatrice worked as a servant to Queen Elena. At Marconi’s request, his marriage to Beatrice was officially ended on April 27, 1927, so he could marry again.

Marconi wanted to marry Maria Cristina Bezzi-Scali (April 2, 1900 – July 15, 1994), the only daughter of Francesco, Count Bezzi-Scali. To do this, he had to confirm his membership in the Catholic Church and became very religious. He had been baptized Catholic but was raised in the Anglican Church. On June 12, 1927, he married Maria in a legal ceremony, with a religious ceremony held on June 15. Marconi was 53 years old, and Maria was 27. They had one daughter, Maria Elettra Elena Anna (born in 1930), who was the goddaughter of Queen Elena. Maria Elettra married Prince Carlo Giovannelli (1942–2016) in 1966, but they later divorced. For unknown reasons, Marconi left his entire fortune to his second wife and their daughter, giving nothing to his children from his first marriage.

In 1931, Marconi helped broadcast the first radio message from Pope Pius XI. At the microphone, he said, “With the help of God, who gives humans the power to use nature’s forces, I have created this tool to let people around the world hear the voice of the Holy Father.”

Commemoration

• In 1974, Italy celebrated the 100th anniversary of Marconi's birth by creating a special coin worth 100 lire.
• In 1975, Marconi was added to the National Inventors Hall of Fame.
• In 1978, Marconi was added to the NAB Broadcasting Hall of Fame.
• In 1988, the Radio Hall of Fame, located at the Museum of Broadcast Communications in Chicago, honored Marconi as a Pioneer shortly after the awards were created.
• In 1990, the Bank of Italy released a 2,000 lire banknote with Marconi's portrait on the front and details about his achievements on the back.
• In 2001, Great Britain released a special £2 coin to mark the 100th anniversary of Marconi's first wireless communication.
• Marconi's early experiments in wireless telegraphy were recognized by the IEEE with two Milestone awards: one in Switzerland in 2003 and another in Italy in 2011.
• In 2009, Italy issued a silver 10 Euro coin to celebrate the 100th anniversary of Marconi's Nobel Prize.
• In 2009, Marconi was added to the New Jersey Hall of Fame.
• The Dutch radio academy gives the Marconi Awards each year to recognize excellent radio programs, presenters, and stations.
• The National Association of Broadcasters (US) gives the annual NAB Marconi Radio Awards to honor outstanding radio programs and stations.

• A monument with a statue of Marconi is located in the Basilica of Santa Croce, Florence, but his remains are kept in the Mausoleum of Guglielmo Marconi in Sasso Marconi, Italy. His former home, near the mausoleum, is now the Marconi Museum in Italy, which displays some of his equipment.
• A sculpture of Marconi by Attilio Piccirilli is located in Washington, D.C.
• A granite obelisk stands on a cliff near the site of Marconi's Poldhu Wireless Station in Cornwall, England, to honor the first transatlantic radio transmission.
• Marconi Plaza Park, a city park named after Marconi in 1937, is located in Philadelphia, Pennsylvania, at Oregon Ave and South Broad Street. It includes a bronze statue of Marconi added in 1975.
• The lyrics "Marconi Plays The Mambo" were written by Martin Page and Bernie Taupin for the 1985 hit song "We Built This City" by the American rock band Starship. The song reached number 1 on the Billboard Hot 100.

Places and organizations named after Marconi include:

• The asteroid 1332 Marconia and a large crater on the far side of the Moon are named in his honor.
• Bologna Guglielmo Marconi Airport (IATA: BLQ, ICAO: LIPE) in Bologna, Italy, is named after Marconi, who was born there.
• Guglielmo Marconi University, a private university in Rome, Italy.
• Ponte Guglielmo Marconi, a bridge in Rome that connects Piazza Augusto Righi with Piazza Tommaso Edison.
• The Australian football club Marconi Stallions.
• The Marconi Wireless Telegraph Company of Canada, now known as CMC Electronics and Ultra Electronics, was started in 1903 by Marconi in Montreal, Quebec, Canada. In 1925, the company was renamed the Canadian Marconi Company. It was later acquired by English Electric in 1953 and renamed CMC Electronics Inc. in 2001. In 2002, the company's radio business was sold to Ultra Electronics, which now operates as Ultra Communications. Both companies remain in Montreal.
• The Marconi National Historic Sites of Canada, created by Parks Canada, honors Marconi's role in developing radio communications. The first wireless message sent across the Atlantic Ocean to England was transmitted from this site in 1902. The museum is located in Glace Bay, Nova Scotia, at Table Head on Timmerman Street.
• Marconi Conference Center and State Historic Park in Marshall, California, where the transoceanic Marshall Receiving Station was located.
• Marconi-RCA Bolinas Transmitting Station in Bolinas, California.
• Station KPH, the Marconi Wireless Telegraph Company of America in Inverness, California.
• Marconi Wireless Telegraphy Station on Oahu's North Shore, Hawaii, which was once the most powerful telegraph station in the world.
• Marconi Beach in Wellfleet, Massachusetts, part of the Cape Cod National Seashore, near the site of Marconi's first transatlantic wireless signal from the United States to Britain. Remnants of the wireless tower remain at this beach and at Forest Road Beach in Chatham, Massachusetts.
• New Brunswick Marconi Station, now the Guglielmo Marconi Memorial Plaza in Somerset, New Jersey. President Woodrow Wilson's Fourteen Points speech was transmitted from this site in 1918.
• Belmar Marconi Station, now the InfoAge Science History Center in Wall Township, New Jersey.

The Marconi Wireless Company of America, the world's first radio company, was formed in Roselle Park, New Jersey, on West Westfield Avenue on November 22, 1899.

• La Scuola d'Italia Guglielmo Marconi, a school located on New York City's Upper East Side.
• Marconi Plaza, Philadelphia, Pennsylvania, a Roman-style plaza originally designed by the Olmsted Brothers in 1914–1916

Collections

A large collection of Marconi artifacts was owned by The General Electric Company, plc (GEC) of the United Kingdom. Later, the company changed its name to Marconi plc and Marconi Corporation plc. In December 2004, the extensive Marconi Collection, which was stored at the former Marconi Research Centre in Great Baddow, Chelmsford, Essex, UK, was donated to the nation by the company through the University of Oxford. The collection included the BAFTA award-winning MarconiCalling website, more than 250 physical artifacts, and a large collection of papers, books, patents, and other items. Today, the physical artifacts are kept at the History of Science Museum in Oxford, while the collection of papers and other documents is stored at the nearby Bodleian Library. After three years of work at the Bodleian Library, an online catalog for the Marconi Archives was published in November 2008.

Patents

• British patent No. 12,039 (1897) "Improvements in Transmitting Electrical Impulses and Signals, and in Apparatus Therefor." Application Date: 2 June 1896; Specification Submitted: 2 March 1897; Approved: 2 July 1897 (Oliver Lodge later claimed that the patent included his own ideas, which he had not patented).
• British patent No. 7,777 (1900) "Improvements in Apparatus for Wireless Telegraphy." Application Date: 26 April 1900; Specification Submitted: 25 February 1901; Approved: 13 April 1901.
• British patent No. 10245 (1902).
• British patent No. 5113 (1904) "Improvements in Transmitters Suitable for Wireless Telegraphy." Application Date: 1 March 1904; Specification Submitted: 30 November 1904; Approved: 19 January 1905.
• British patent No. 21640 (1904) "Improvements in Apparatus for Wireless Telegraphy." Application Date: 8 October 1904; Specification Submitted: 6 July 1905; Approved: 10 August 1905.
• British patent No. 14788 (1904) "Improvements in or Relating to Wireless Telegraphy." Application Date: 18 July 1905; Specification Submitted: 23 January 1906; Approved: 10 May 1906.

• U.S. patent 586,193 "Transmitting Electrical Signals" (using Ruhmkorff coil and Morse code key). Filed: December 1896; Patented: July 1897.
• U.S. patent 624,516 "Apparatus Employed in Wireless Telegraphy."
• U.S. patent 627,650 "Apparatus Employed in Wireless Telegraphy."
• U.S. patent 647,007 "Apparatus Employed in Wireless Telegraphy."
• U.S. patent 647,008 "Apparatus Employed in Wireless Telegraphy."
• U.S. patent 647,009 "Apparatus Employed in Wireless Telegraphy."
• U.S. patent 650,109 "Apparatus Employed in Wireless Telegraphy."
• U.S. patent 650,110 "Apparatus Employed in Wireless Telegraphy."
• U.S. patent 668,315 "Receiver for Electrical Oscillations."
• U.S. patent 676,332 "Apparatus for Wireless Telegraphy" (later practical version of system).
• U.S. patent 757,559 "Wireless Telegraphy System." Filed: 19 November 1901; Issued: 19 April 1904.
• U.S. patent 760,463 "Wireless Signaling System." Filed: 10 September 1903; Issued: 24 May 1904.
• U.S. patent 763,772 "Apparatus for Wireless Telegraphy" (Four tuned system; this innovation was predated by N. Tesla, O. Lodge, and J. S. Stone).
• U.S. patent 786,132 "Wireless Telegraphy." Filed: 13 October 1903.
• U.S. patent 792,528 "Wireless Telegraphy." Filed: 13 October 1903; Issued: 13 June 1905.
• U.S. patent 884,986 "Wireless Telegraphy." Filed: 28 November 1902; Issued: 14 April 1908.
• U.S. patent 884,987 "Wireless Telegraphy."
• U.S. patent 884,988 "Detecting Electrical Oscillations." Filed: 2 February 1903; Issued: 14 April 1908.
• U.S. patent 884,989 "Wireless Telegraphy." Filed: 2 February 1903; Issued: 14 April 1908.
• U.S. patent 924,560 "Wireless Signaling System." Filed: 9 August 1906; Issued: 8 June 1909.
• U.S. patent 935,381 "Transmitting Apparatus for Wireless Telegraphy." Filed: 10 April 1908; Issued: 28 September 1909.
• U.S. patent 935,382 "Apparatus for Wireless Telegraphy."
• U.S. patent 935,383 "Apparatus for Wireless Telegraphy." Filed: 10 April 1908; Issued: 28 September 1909.
• U.S. patent 954,640 "Apparatus for Wireless Telegraphy." Filed: 31 March 1909; Issued: 12 April 1910.
• U.S. patent 997,308 "Transmitting Apparatus for Wireless Telegraphy." Filed: 15 July 1910; Issued: 11 July 1911.
• U.S. patent 1,102,990 "Means for Generating Alternating Electric Currents." Filed: 27 January 1914; Issued: 7 July 1914.
• U.S. patent 1,226,099 "Transmitting Apparatus for Use in Wireless Telegraphy and Telephony." Filed: 31 December 1913; Issued: 15 May 1917.
• U.S. patent 1,271,190 "Wireless Telegraph Transmitter."
• U.S. patent 1,377,722 "Electric Accumulator." Filed: 9 March 1918.
• U.S. patent 1,148,521 "Transmitter for Wireless Telegraphy." Filed: 20 July 1908; Iss