A television is a telecommunication medium that reproduces moving images and sound at a distance.
In 1878 Englishman William Crookes invented the Crookes tube, producing cathode rays. Seven years later in Germany, Paul Nipkow built a mechanical scanning device, the Nipkow disc, which was a rotating disc with a spiral pattern of holes in it. Both these inventions were important in the development of the early television sets.
The Russian inventor Boris Rosing's interest in television — or the "electric telescope", as he called it — started in 1897. He began experimenting with the Nipkow disc using the cathode ray tube as a receiver, eventually succeeding in transmitting some crude television pictures. Rosing filed a patent application in Russia on July 25, 1907.
The word "television" comes from the words "tele" (Greek for far away) and vision (sight). It first entered the English language in 1907 at the start of attempts to transmit moving images.
By the 1920s, amplification had made the idea of television practical. However, some people were unimpressed with the idea. CP Scott, editor of the Manchester Guardian, said in 1920: "Television? The word is half Greek and half Latin. No good will come of it."
Vladimir K. Zworykin, who had helped Rosing with his pioneering work on the television, invented in 1923 the iconoscope. It was the first practical video camera tube to be used in early television cameras.
John Logie Baird, a Scottish electrical engineer and a son of a Presbyterian minister, created his television prototype in a little village called Santa Cruz on the island of Trinidad where he was recovering from an illness. He called it a "televisor."
Baird gave the first public demonstration of televised silhouette images in motion at Selfridge's Department Store in London on March 25, 1925. Baird's early system used a large spinning disc through which a picture could be broken down into horizontal lines.
On October 2, 1925, John Logie Baird made the first successful transmission of a moving image of a human face by television. The face was that of his office boy, William Taynton, who was paid two shillings and sixpence for sitting in front of the hot TV transmitter. Before using a real person, Baird had experimented with a ventriloquist's dummy called Stooky Bill.
The prototype television set Baird used for his early experiments was made from an old hatbox, a pair of scissors, some darning needles, some bicycle light lenses, a used tea chest, wax and glue.
John Logie Baird gave the first public demonstration of a moving televised image in 1926 when he showed the face of his business partner Oliver Hutchinson. At the time Baird's crude television apparatus was able to receive transmitted moving images over a range of a few feet.
Below is a photograph of a moving image of Oliver Hutchinson produced by Baird's "televisor", as reported in The London Times, January 28, 1926.
American inventor Philo Farnsworth built the first fully functional and complete all-electronic television system using cathode ray tubes. On September 7, 1927, Farnsworth's image dissector camera tube transmitted its first image, a simple straight line, to a receiver in another room of his laboratory at 202 Green Street in San Francisco. Within two years, Farnworth and Vladimir Zworykin had perfected a new improved television system.
Even though Philo Farnsworth, the inventor of electronic television, was disappointed by electronic television for most of his life, he changed his mind the day he saw Neil Armstrong walk on the Moon thanks to his invention, telling his wife "this has made it all worthwhile".
Charles Francis Jenkins of Washington, D.C was a pioneer of early cinema and one of the inventors of television, though he used mechanical rather than electronic technologies. His businesses included Charles Jenkins Laboratories, which in 1928 became the first holder of a television license from the Federal Radio Commission.
Ten years after John Logie Baird gave the first public demonstration of television in 1926 in London there were only 100 TVs in the world.
A 1938 television model with a 12-inch screen could be had for $445 — more than $7,200 in today's dollars.
John Logie Baird Baird gave a demonstration of color television in London in 1928, but it took several decades before the first successful system was adopted for broadcasting.
By 1940, John Logie Baird had started work on a fully electronic color system he called the "Telechrome". His demonstration on August 16, 1944 was the first example of a practical color television system whose pictures closely resembled Technicolor films. Work on the Telechrome continued but Baird's untimely death in 1946 ended development of his color television system.
The live image of Paddy Naismith below was used to demonstrate John Logie Baird's first all-electronic color television system.
The first demonstration of small-screen color television in America was given by the Columbia Broadcasting System (CBS) in 1941. The TV failed miserably, since Radio Corporation of America (RCA) had pretty much wrapped up the patent process on color TV at the time.
CBS's mechanical color system was the first to be licensed for broadcast by the U.S. Federal Communications Commission in 1950 and the company made the first color televisions available for sale to the general public the following year, but the product was discontinued less than month later.
HISTORY OF THE TELEVISION SET
In 1878 Englishman William Crookes invented the Crookes tube, producing cathode rays. Seven years later in Germany, Paul Nipkow built a mechanical scanning device, the Nipkow disc, which was a rotating disc with a spiral pattern of holes in it. Both these inventions were important in the development of the early television sets.
The Russian inventor Boris Rosing's interest in television — or the "electric telescope", as he called it — started in 1897. He began experimenting with the Nipkow disc using the cathode ray tube as a receiver, eventually succeeding in transmitting some crude television pictures. Rosing filed a patent application in Russia on July 25, 1907.
The word "television" comes from the words "tele" (Greek for far away) and vision (sight). It first entered the English language in 1907 at the start of attempts to transmit moving images.
By the 1920s, amplification had made the idea of television practical. However, some people were unimpressed with the idea. CP Scott, editor of the Manchester Guardian, said in 1920: "Television? The word is half Greek and half Latin. No good will come of it."
Vladimir K. Zworykin, who had helped Rosing with his pioneering work on the television, invented in 1923 the iconoscope. It was the first practical video camera tube to be used in early television cameras.
 |
| Iconoscope television cameras at NBC in 1937 |
John Logie Baird, a Scottish electrical engineer and a son of a Presbyterian minister, created his television prototype in a little village called Santa Cruz on the island of Trinidad where he was recovering from an illness. He called it a "televisor."
Baird gave the first public demonstration of televised silhouette images in motion at Selfridge's Department Store in London on March 25, 1925. Baird's early system used a large spinning disc through which a picture could be broken down into horizontal lines.
On October 2, 1925, John Logie Baird made the first successful transmission of a moving image of a human face by television. The face was that of his office boy, William Taynton, who was paid two shillings and sixpence for sitting in front of the hot TV transmitter. Before using a real person, Baird had experimented with a ventriloquist's dummy called Stooky Bill.
The prototype television set Baird used for his early experiments was made from an old hatbox, a pair of scissors, some darning needles, some bicycle light lenses, a used tea chest, wax and glue.
John Logie Baird gave the first public demonstration of a moving televised image in 1926 when he showed the face of his business partner Oliver Hutchinson. At the time Baird's crude television apparatus was able to receive transmitted moving images over a range of a few feet.
Below is a photograph of a moving image of Oliver Hutchinson produced by Baird's "televisor", as reported in The London Times, January 28, 1926.
 |
| Wikipedia |
American inventor Philo Farnsworth built the first fully functional and complete all-electronic television system using cathode ray tubes. On September 7, 1927, Farnsworth's image dissector camera tube transmitted its first image, a simple straight line, to a receiver in another room of his laboratory at 202 Green Street in San Francisco. Within two years, Farnworth and Vladimir Zworykin had perfected a new improved television system.
 |
| Vladimir Zworykin demonstrates electronic television (1929) |
Even though Philo Farnsworth, the inventor of electronic television, was disappointed by electronic television for most of his life, he changed his mind the day he saw Neil Armstrong walk on the Moon thanks to his invention, telling his wife "this has made it all worthwhile".
Charles Francis Jenkins of Washington, D.C was a pioneer of early cinema and one of the inventors of television, though he used mechanical rather than electronic technologies. His businesses included Charles Jenkins Laboratories, which in 1928 became the first holder of a television license from the Federal Radio Commission.
Ten years after John Logie Baird gave the first public demonstration of television in 1926 in London there were only 100 TVs in the world.
A 1938 television model with a 12-inch screen could be had for $445 — more than $7,200 in today's dollars.
John Logie Baird Baird gave a demonstration of color television in London in 1928, but it took several decades before the first successful system was adopted for broadcasting.
By 1940, John Logie Baird had started work on a fully electronic color system he called the "Telechrome". His demonstration on August 16, 1944 was the first example of a practical color television system whose pictures closely resembled Technicolor films. Work on the Telechrome continued but Baird's untimely death in 1946 ended development of his color television system.
The live image of Paddy Naismith below was used to demonstrate John Logie Baird's first all-electronic color television system.
The first demonstration of small-screen color television in America was given by the Columbia Broadcasting System (CBS) in 1941. The TV failed miserably, since Radio Corporation of America (RCA) had pretty much wrapped up the patent process on color TV at the time.
CBS's mechanical color system was the first to be licensed for broadcast by the U.S. Federal Communications Commission in 1950 and the company made the first color televisions available for sale to the general public the following year, but the product was discontinued less than month later.
December 30, 1953 marked the official launch date for compatible color TVs from the Admiral Corporation. These first compatible color TV sets by the Admiral corporation had a 15" screen and sold for about $1,175.
RCA began commercial production of color TV sets on March 25, 1954, and 5,000 Model CT-100's were produced. Initially $1,000, its price was cut to $495 in August 1954.
 |
| CT-100 at the SPARK Museum of Electrical Invention playing Superman. |
TV detector vans hit the British streets in February 1952 for the first time and found 150,000 homes hadn't paid their £2 licence fee.
On January 30, 1957 300 UK MPs and peers watched the first full length show produced in color in Britain. Sets were rigged up by the BBC in a committee room. TV broadcaster Sylvia Peters — in a green taffeta dress — was the announcer in the half-hour program. Guyanese musician and poet Cy Grant appeared in a vivid shirt and sang a calypso.
Sales of color TVs surpassed black-and-white sets for the first time in 1972.
The electronics giant Philips unveiled a new television, the Flat TV in 1996. It could be hung on a wall as if it were a painting.
Philips introduced the first plasma TV in 1997. It was only displayed in four Sears locations in the US and was priced at US$14,999, which included in-home installation.
FUN TELEVISION FACTS
A small percentage of static on televisions is actually radioactive resonance from the Big Bang 13 billion years ago.
The "color bars" we see used on televisions are called SMPTE bars. These bars, which were created in 1951 and became widespread in 1978, are used to calibrate color and audio levels for taped recordings.
 |
| Rendition of SD SMPTE color bars By Denelson83 |
St Clare of Assisi is patron saint of television as she once saw a vision as if projected on her wall. In the vision she saw and heard the Mass as clearly as if she had gone to the monastery chapel.
The idea that sitting too close to the television is bad for your eyes was started by a lamp manufacturer.
In 1997, a monkey was arrested in the African state of Benin for stealing a television aerial.
The average person in the UK watches just over four hours' television a day.
It has been calculated that the average American child sees about 13,000 deaths on television between the ages of five and 14.
One in every four Americans has appeared on TV.
Source Daily Express
No comments:
Post a Comment