The telectroscope (also referred to as 'electroscope') was the first conceptual model of a television or videophone system. The term was used in the 19th century to describe science-based systems of distant seeing.
The name and its concept came into being not long after the telephone was patented in 1876, and its original concept evolved from that of remote facsimile reproductions onto paper, into the live viewing of remote images. [1]
The term "telectroscope" (French : télectroscope) was used by the French abbot, mathematician and publisher Moigno in 1877 and by the French writer and publisher Louis Figuier in 1878 to popularize an invention wrongly interpreted as real and incorrectly ascribed to Alexander Graham Bell. [2] [3]
Both cite the press of Boston as their source, but they might have been misled by the article "The Electroscope" published in The Sun of 30 March 1877. [1] Written under the pseudonym "Electrician", the New York Sun article claimed that "an eminent scientist", whose name had to be withheld, had invented a device whereby objects or people anywhere in the world "could be seen anywhere by anybody". According to the article, the device would allow merchants to transmit pictures of their wares to their customers, the contents of museum collections would be made available to scholars in distant cities, and (combined with the telephone) operas and plays could be broadcast into people's homes. [4]
In reality, the imagined "telectroscopes" described in the articles had nothing to do with the device being developed by Dr. Bell and his assistant Charles Sumner Tainter which was christened with the ambiguous name photophone . The photophone was actually a wireless optical telephone that conveyed audio conversations on modulated lightbeams, the precursor for today's fiber-optic communications. Bell and Tainter would receive several patents in 1880/1881 for their then cutting-edge invention (master U.S. patent 235,199 ), which used the same selenium materials in its receivers that created the initial excitement surrounding the telectroscope's proposals. [1] [5]
Nevertheless, the word "telectroscope" was widely accepted. It was used to describe the work of nineteenth century inventors and scientists such as Constantin Senlecq, [6] George R. Carey, [7] Adriano de Paiva, and later Jan Szczepanik, who with Ludwig Kleiberg obtained a British patent (patent nr. 5031) [8] for his device in 1897. [9] [10] [11] Szczepanik's telectroscope, although never actually exhibited and, as some claim, likely never existed, [12] was covered in the New York Times on April 3, 1898, where it was described as "a scheme for the transmission of colored rays". [13] and it was further developed and presented on the exhibition in Paris in 1900. [14] Szczepanik's experiments fascinated Mark Twain, who wrote a fictional account of his work in his short story From The Times of 1904. [15] Both the imagined "telectroscope" of 1877 and Mark Twain's fictional device (called a telectrophonoscope) had an important effect on the public. They also provided feedback to the researchers.
Neither the fictional nor the real nineteenth century prototype telectroscopes were real television systems. "Telectroscope" was eventually replaced by the term "television", most probably coined by Constantin Perskyi in 1900.
In the recent era, 'telectroscope' was the name of a modern art installation constructed by Paul St George in 2008, which provided a visual link between London and New York City. [16] In May–June 2008, artist Paul St George exhibited outdoor interactive video installations linking London and New York City as a fanciful telectroscope. According to the Telectroscope's back story, it used a transatlantic tunnel started by the artist's fictional great-grandfather, Alexander Stanhope St. George. [17] [18] [19] In reality, the installation used two video cameras linked by a VPN connection to provide a virtual tunnel across the Atlantic. The connection used links of between 8 and 50 Mbit/s and the images were transmitted using MPEG-2 compression. [20] The producer of this spectacle was the creative company Artichoke, who previously staged The Sultan's Elephant in London. [21]
The concept of visually linking distant places and continents in real time was previously explored by Kit Galloway and Sherrie Rabinovitz with Hole in Space (1980), an art installation linking shop windows in New York and Los Angeles [22] as well as by Maurice Benayoun with The Tunnel under the Atlantic between the Pompidou Centre in Paris and the Museum of Contemporary Art in Montreal (1995).
Later similar projects include the New York–Dublin Portal of 2024.
Alexander Graham Bell was a Scottish-born Canadian-American inventor, scientist, and engineer who is credited with patenting the first practical telephone. He also co-founded the American Telephone and Telegraph Company (AT&T) in 1885.
Television (TV) is a telecommunication medium for transmitting moving images and sound. Additionally, the term can refer to a physical television set rather than the medium of transmission. Television is a mass medium for advertising, entertainment, news, and sports. The medium is capable of more than "radio broadcasting," which refers to an audio signal sent to radio receivers.
The photophone is a telecommunications device that allows transmission of speech on a beam of light. It was invented jointly by Alexander Graham Bell and his assistant Charles Sumner Tainter on February 19, 1880, at Bell's laboratory at 1325 L Street in Washington, D.C. Both were later to become full associates in the Volta Laboratory Association, created and financed by Bell.
Optical communication, also known as optical telecommunication, is communication at a distance using light to carry information. It can be performed visually or by using electronic devices. The earliest basic forms of optical communication date back several millennia, while the earliest electrical device created to do so was the photophone, invented in 1880.
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Antonio Santi Giuseppe Meucci was an Italian inventor and an associate of Giuseppe Garibaldi, a major political figure in the history of Italy. Meucci is best known for developing a voice-communication apparatus that several sources credit as the first telephone.
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Charles Sumner Tainter was an American scientific instrument maker, engineer and inventor, best known for his collaborations with Alexander Graham Bell, Chichester Bell, Alexander's father-in-law Gardiner Hubbard, and for his significant improvements to Thomas Edison's phonograph, resulting in the Graphophone, one version of which was the first Dictaphone.
Jan Szczepanik was a Polish inventor, with several hundred patents and over 50 discoveries to his name, many of which are still applied today, especially in the motion picture industry, as well as in photography and television. Some of his concepts helped the future evolution of TV broadcasting, such as the telectroscope or the wireless telegraph, which greatly affected the development of telecommunications. He died in Tarnów in the Second Polish Republic.
The Movietone sound system is an optical sound-on-film method of recording sound for motion pictures, ensuring synchronization between sound and picture. It achieves this by recording the sound as a variable-density optical track on the same strip of film that records the pictures. The initial version of this system was capable of a frequency response of 8500 Hz. Although modern sound films use variable-area tracks instead, modern motion picture theaters can play a Movietone film without modification to the projector. Movietone was one of four motion picture sound systems under development in the U.S. during the 1920s. The others were DeForest's Phonofilm, Warner Brothers' Vitaphone, and RCA Photophone. However, Phonofilm was principally an early version of Movietone.
The history of telecommunication began with the use of smoke signals and drums in Africa, Asia, and the Americas. In the 1790s, the first fixed semaphore systems emerged in Europe. However, it was not until the 1830s that electrical telecommunication systems started to appear. This article details the history of telecommunication and the individuals who helped make telecommunication systems what they are today. The history of telecommunication is an important part of the larger history of communication.
The diaphone is a noisemaking device best known for its use as a foghorn: It can produce deep, powerful tones, able to carry a long distance. Although they have fallen out of favor, diaphones were also used at some fire stations and in other situations where a loud, audible signal was required.
Father Roberto Landell de Moura, commonly known as Roberto Landell, was a Brazilian Roman Catholic priest and inventor. He is best known for his attempts in the 1880s to develop long-distance audio transmissions device that combined an improved megaphone device and a photophone. Landell received patents in Brazil and the United States during the first decade of the 1900s in which he also included designs that he claimed could transmit voice using radio waves.
This history of the telephone chronicles the development of the electrical telephone, and includes a brief overview of its predecessors. The first telephone patent was granted to Alexander Graham Bell in 1869.
George R. Carey (1851–1906) was an American inventor. He was among the first to propose the telectroscope using the photoelectric properties of selenium as a means for transmitting images—a precursor to modern television.
Telecommunications engineering is a subfield of electronics engineering which seeks to design and devise systems of communication at a distance. The work ranges from basic circuit design to strategic mass developments. A telecommunication engineer is responsible for designing and overseeing the installation of telecommunications equipment and facilities, such as complex electronic switching system, and other plain old telephone service facilities, optical fiber cabling, IP networks, and microwave transmission systems. Telecommunications engineering also overlaps with broadcast engineering.
Mabel Gardiner Hubbard Bell was an American businesswoman, and the daughter of Boston lawyer Gardiner Green Hubbard. She was the wife of Alexander Graham Bell, inventor of the first practical telephone.
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Paul St George is a London based multimedia artist and sculptor, best known for The Telectroscope, an art installation visually linking London and New York.
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