1990 (TV series)

1990 is a British television series produced by the BBC. The series is set in a dystopian future (dubbed "Nineteen Eighty-Four plus six" by its creator Wilfred Greatorex) where Britain is under the grip of the Department of Public Control, a tyrannically oppressive bureaucracy riding roughshod over the population's civil liberties. Edward Woodward played Jim Kyle, a journalist who turns renegade and begins to covertly fight the P.C.D. The officials of the P.C.D. in turn try to prove Kyle's rebellious activities. 1990 also starred Robert Lang, Barbara Kellerman, Lisa Harrow, Tony Doyle and Clive Swift. Two series of eight episodes each were produced between 1977 and 1978.

External links

- [http://www.action-tv.org.uk/guides/1990.htm Action TV] Category:BBC television programmes Category:Science fiction television series

United Kingdom

:For other meanings of the terms "United Kingdom" and "UK" , see United Kingdom (disambiguation) and UK (disambiguation). :For an explanation of terms like England, (Great) Britain and United Kingdom see British Isles (terminology). The United Kingdom of Great Britain and Northern Ireland (usually shortened to the United Kingdom or the UK) is a country located off the north-western coast of continental Europe, surrounded by the North Sea, the English Channel, the Celtic Sea, the Irish Sea, and the Atlantic Ocean. It is composed of four constituent parts: three constituent countries—England, Scotland, and Wales—on the island of Great Britain, and the province of Northern Ireland on the island of Ireland. The border between Northern Ireland and the Republic of Ireland forms the United Kingdom's principal international land border, although there is a nominal frontier with France in the middle of the Channel Tunnel. The UK has several overseas territories and the Crown dependencies of the Isle of Man and the Channel Islands come under the UK's sovereignty. The UK also has close relationships with the fifteen other Commonwealth Realms, as they all share the same head of state. The UK is also one of the largest member states of the European Union and a founding partner of both the UN and NATO.
Terminology

- United Kingdom of Great Britain and Northern Ireland: The official name for the sovereign state
- United Kingdom: an abbreviation of United Kingdom of Great Britain and Northern Ireland
- Britain: an informal term that sometimes means United Kingdom of Great Britain and Northern Ireland and sometimes means Great Britain
- British: an informal term that sometimes means from the United Kingdom of Great Britain and Northern Ireland and sometimes means from Great Britain
- Great Britain (as a geographical term): the largest island of the British Isles
- Great Britain (as a political term): England + Wales + Scotland
- British Isles (as a geographical term): Great Britain + Ireland + many smaller surrounding islands. This term is disputed, please see below.
- Ireland (as a geographical term): the second largest island of the British Isles
- Ireland (as a political term): an abbreviation of the Republic of Ireland, a sovereign state on the island of Ireland
- Northern Ireland: a political region of the United Kingdom of Great Britain and Northern Ireland
- Ulster (as a geographical term): Often used to refer to Northern Ireland. It is derived from the Irish Language term 'Ulad.' It was one of the ancient Irish provinces (the others were Connaught, Leinster and Munster.). Although it is normally used to refer to Northern Ireland, Ulster also (traditionally) includes Counties Cavan, Monaghan and Donegal, which lie in the Republic of Ireland. The term Ulster is often favoured by the Protestant community.
History
Protestant Today's state is the latest of several unions formed over the last 1000 years. Scotland and England have existed as separate unified entities since the 10th century. Wales, under English control since the Statute of Rhuddlan in 1284, became part of the Kingdom of England by the Laws in Wales Act 1535. With the Act of Union 1707, the separate kingdoms of England and Scotland, having shared the same monarch since 1603, agreed to a permanent union as the Kingdom of Great Britain. The Act of Union 1800 united the Kingdom of Great Britain with the Kingdom of Ireland, which had been gradually brought under English control between 1169 and 1691, to form the United Kingdom of Great Britain and Ireland. The United Kingdom of Great Britain and Northern Ireland was formed in 1922, after bitter fighting which echoes down to the current political strife, the Anglo-Irish Treaty partitioned Ireland into the Irish Free State and Northern Ireland, with the latter remaining part of the United Kingdom. As provided for in the treaty, Northern Ireland, which consists of six of the nine counties of the Irish province of Ulster, immediately opted out of the Free State and to remain in the UK. The nomenclature of the UK was changed in 1927 to recognise the departure of most of Ireland, with the current name being adopted. 1927 The United Kingdom, the dominant industrial and maritime power of the 19th century, played a leading role in developing Western world ideas of property, liberty, capitalism and parliamentary democracy - to say nothing of its part in advancing world literature and science. At its zenith, the British Empire stretched over one quarter of the Earth's surface and encompassed a third of its population. The first half of the 20th century saw the UK's strength seriously depleted from the effects of World War I and World War II. The second half witnessed the dismantling of the Empire and the UK rebuilding itself into a modern and prosperous nation. The UK has been a member of the European Union since 1973. Its attitude towards further integration is conservative, and there is significant Euroscepticism in UK politics. It has not chosen to adopt the Euro, owing to internal political considerations and the government's judgement of the prevailing economic conditions.
Government and politics
The United Kingdom is a constitutional monarchy, with executive power exercised on behalf of the Queen by the Prime Minister and other cabinet ministers who head departments. The cabinet, including the Prime Minister, and other ministers collectively make up Her Majesty's Government. These ministers are drawn from and are responsible to Parliament, the legislative body, which is traditionally considered to be "supreme" (that is, able to legislate on any matter and not bound by decisions of its predecessors). The UK is one of the few countries in the world today that does not have a codified constitution, relying instead on customs and separate pieces of constitutional law. While the monarch is Head of State and holds all executive power, it is the Prime Minister who is the head of government. The government is answerable chiefly to the House of Commons and the Prime Minister is drawn from this chamber of Parliament by constitutional convention. The majority of cabinet members will be from the House of Commons, the rest from the House of Lords. Ministers do not, however, legally have to come from Parliament, though that is the modern day custom. The British system of government has been emulated around the world - a legacy of the United Kingdom's colonial past - most notably in the other Commonwealth Realms. The Prime Minister is chosen as the MP who can command a majority in the House of Commons - usually the leader of the largest party or, if there is no majority party, the largest coalition. The current Prime Minister is Tony Blair of the Labour Party, who has been in office since 1997. In the United Kingdom the monarch has extensive theoretical powers, but his or her role is mainly, though not exclusively, ceremonial. The monarch is an integral part of Parliament (as the "Crown-in-Parliament") and theoretically gives Parliament the power to meet and create legislation. An Act of Parliament does not become law until it has been signed by the Queen (being given Royal Assent), although no monarch has refused to assent to a bill that has been approved by Parliament since Queen Anne in 1708. Although the abolition of the monarchy has been suggested several times, the popularity of the monarchy remains strong in spite of recent controversies. Support for a British republic usually fluctuates between 15% and 25% of the population, with roughly 10% undecided or indifferent [http://www.mori.com/mrr/2000/c000616.shtml]. The current monarch is Queen Elizabeth II who acceded to the throne in 1952 and was crowned in 1953. Parliament is the national legislature of the United Kingdom. It is the ultimate legislative authority in the United Kingdom, according to the doctrine of parliamentary sovereignty. It is bicameral, composed of the elected House of Commons and the unelected House of Lords, whose members are mostly appointed. The House of Commons is the more powerful of the two houses. The House of Commons has 646 members who are directly elected from single-member constituencies based on population. The House of Lords has 724 members (though this number is not fixed): hereditary peers, life peers, and bishops of the Church of England. The Church of England is the established church of the state in England. established church]] The two largest political parties are the Labour Party and Conservative Party. The UK has long had a two-party system, but in the last 20 years the Liberal Democrats have re-emerged as a large third party. The electoral system used for general elections is first-past-the-post. The constitution of the United Kingdom is un-codified and partially unwritten, which means that no single document regulates how the government works, and unwritten constitutional conventions are used extensively. The constitution is based on the principle that Parliament is the ultimate sovereign body in the country. There has long been a widespread sense of national identity in the Celtic nations. Throughout the late 19th century the UK debated giving Ireland home rule. The Scottish National Party was founded in 1934, and Plaid Cymru (Party of Wales) in 1925. Referenda for devolution succeeded in 1997 for Scotland and Wales and in 1998 for Northern Ireland. In 1999, the Scottish Parliament and the National Assembly for Wales were established, the former having primary legislative power. Proportional representation is used for the elections, which has resulted in a Labour-Liberal Democrat coalition government in Scotland. Due to internal disagreements, the Northern Ireland Assembly has been suspended since 2002.
Subdivisions
The United Kingdom is a country that is divided into four constituent parts:
- England
- Scotland
- Northern Ireland
- Wales The constituent parts of the United Kingdom have administrative subdivisions as follows:
- The regions and administrative counties of England
- The council areas of Scotland
- The counties and county boroughs of Wales
- The districts of Northern Ireland The Laws in Wales Act 1535 incorporated Wales and England into England and Wales for legal purposes. Although all four have historically been divided into counties, England's population is an order of magnitude larger than the others so in recent years it has for some purposes been divided into nine intermediate-level Government Office Regions. Each region is made up of counties and unitary authorities, apart from London, which consists of London boroughs. Although at one point it was intended that each or some of these regions would be given its own regional assembly, the plan's future is uncertain, as of 2004, after the North East region rejected its proposed assembly in a referendum. Scotland consists of 32 Council Areas. Wales consists of 22 Unitary Authorities, styled as 10 County Boroughs, 9 Counties, and 3 Cities. Northern Ireland is divided into 26 Districts. Also sometimes associated with the United Kingdom, though not constitutionally part of the United Kingdom itself, are the Crown dependencies (the Bailiwicks of Jersey and Guernsey, and the Isle of Man) as self-governing possessions of the Crown, and a number of overseas territories under the sovereignty of the United Kingdom.
Military
The armed forces of the United Kingdom are known as the British Armed Forces or Her Majesty's Armed Forces, officially the Armed Forces of the Crown. Their Commander-in-Chief is the Queen and they are managed by the Ministry of Defence. Ministry of Defence The British Armed Forces are charged with protecting the United Kingdom and its overseas territories, promoting the United Kingdom's wider security interests, and supporting international peacekeeping efforts. They are active and regular participants in NATO and other coalition operations. The United Kingdom fields one of the most powerful and comprehensive military forces in the World. Its global power projection capabilities are second only to those of the United States Armed Forces. The British Army had a reported strength of 112,700 in 2004, including 7,600 women, and the Royal Air Force a strength of 53,400. The 40,900-member Royal Navy is in charge of the United Kingdom's independent strategic nuclear arm, which consists of four Trident Ballistic Missile Submarines, while the Royal Marines provide infantry units for amphibious assault and for specialist reinforcement forces in and beyond the NATO area. This puts total active duty military troops in the 210,000 range, currently deployed in over 80 countries. The UK's special forces, principally the SAS, provides elite commandos trained for quick, mobile, military responses; often where secrecy or covert operations are required. The Royal Navy is the second largest navy in the World in terms of gross tonnage. Despite the United Kingdom's wide ranging capabilities, recent pragmatic defence policy has a stated assumption that any large operation would be undertaken as part of a coalition. Bosnia, Kosovo, Afghanistan, Iraq (Granby, No-Fly-Zones, Desert Fox and Telic) may all be taken as precedent - indeed the last true war in which the British military fought alone was the Falklands War of 1982, in which military action was initiated by Argentina and the UK was fighting a defensive, rather than offensive, campaign. The British army has been actively involved in the Troubles in Northern Ireland. However, a programme of demilitarisation is being gradually implemented.
Geography
Troubles World Factbook Map of the United Kingdom]] Most of England consists of rolling lowland terrain, divided east from west by more mountainous terrain in the Northwest (Cumbrian Mountains of the Lake District) and north (the upland moors of the Pennines) and limestone hills of the Peak District by the Tees-Exe line. The lower limestone hills of the Isle of Purbeck, Cotswolds, Lincolnshire and chalk downs of the Southern England Chalk Formation. The main rivers and estuaries are the Thames, Severn and the Humber Estuary. The largest urban area is Greater London. Near Dover, the Channel Tunnel links the United Kingdom with France. There is no peak in England that is 1000 metres (3,300 ft) or greater. Wales is mostly mountainous, the highest peak being Snowdon at 1085 metres (3,560 ft) above sea level. North of the mainland is the island of Anglesey. The largest and capital city is Cardiff, located in South Wales. Scotland's geography is varied, with lowlands in the south and east and highlands in the north and west, including Ben Nevis, the UK's highest mountain at 1343 metres (4,406 ft). There are many long and deep-sea arms, firths, and lochs. A multitude of islands west and north of Scotland are also included, notably the Hebrides, Orkney Islands and Shetland Islands. The largest city is Glasgow. Northern Ireland, making up the north-eastern part of Ireland, is mostly hilly. The main cities are Belfast ('Beal Feirste' in Irish) and Londonderry / Derry ('Doire' in Irish). The province is home to one of the UK’s World Heritage Sites, the Giant's Causeway, which consists of more than 40,000 six-sided basalt columns up to 40 feett (12 m) high. In total it is estimated that the UK includes around 1098 small islands, some being natural and some being crannogs, a type of artificial island which was built in past times using stone and wood, gradually enlarged by natural waste building up over time.
Economy
artificial island The United Kingdom, a leading trading power and financial centre, has an essentially capitalist economy, the fourth largest in the world in terms of market exchange rates and the sixth largest by purchasing power parity (PPP) exchange rates. Over the past three decades, the government has greatly reduced public ownership by means of privatisation programmes, and has contained the growth of the Welfare State. Agriculture is intensive, highly mechanised, and efficient by European standards, producing about 60% of food needs with only 1% of the labour force. The UK has large coal, natural gas, and oil reserves; primary energy production accounts for 10% of GDP, one of the highest shares of any industrial state. Services, particularly banking, insurance and business services, account for by far the largest proportion of GDP. Industry continues to decline in importance, although the UK is still Europe's largest manufacturer of armaments, petroleum products, personal computers, televisions, and mobile telephones. Tourism is also important: with over 24 million tourists a year, between China (33) and Austria (19.1), the United Kingdom is ranked as the sixth major tourist destination in the world. The Blair government has put off the question of participation in the Euro system, citing five economic tests that would need to be met before they recommend that the UK adopts the Euro, and hold a referendum.
Society

Demographics
At the April 2001 census, the United Kingdom's population was 58,789,194, the third-largest in the European Union (behind Germany and metropolitan France) and the twenty-first largest in the world. Its overall population density is one of the highest in the world. Almost one-third of the population lives in England's prosperous south-east and is predominantly urban and suburban--with about 7.2 million in the capital of London. The United Kingdom's high literacy rate (99%) is attributable to universal public education introduced for the primary level in 1870 and secondary level in 1900 (except in Scotland where it was introduced in 1696). Education is mandatory from ages five through sixteen. referendum The Church of England and the Church of Scotland function as the official national religions in their respective countries, but most religions found in the world are represented in the United Kingdom. Anglicanism is the state religion that has been established in England since 1534 during the reign of King Henry VIII. During his reign, England broke ties with the Roman Catholic church and established the Church of England as the offical religion of England. Reforms to the nature of the church's relationship to the state have been ongoing, especially concerning the nature of the House of Lords and the appointment of a fixed amount of the lordships going to Lords Temporal, bishops of the Church of England. A group of islands close to continental Europe, the British Isles have been subject to many invasions and migrations, especially from Scandinavia and the continent, including Roman occupation for several centuries. Contemporary Britons are descended mainly from the varied ethnic stocks that settled there before the eleventh century. The pre-Celtic, Celtic, Roman, Anglo-Saxon, and Norse influences were blended on Great Britain under the Normans, Scandinavian Vikings who had lived in Northern France. Although Celtic languages persist in Wales, Scotland, and Northern Ireland, the predominant language is English, which is a West Germanic language descended from Old English, featuring a large amount of borrowings from Norman French.The other indigenous languages include the Celtic languages; Welsh, the closely related Irish and Scots Gaelic, and the Cornish language; as well as Lowland Scots, which is closely related to English; Romany; and British Sign Language (Northern Ireland Sign Language is also used in Northern Ireland). Celtic dialectal influences from Cumbric persisted in Northern England for many centuries, most famously in a unique set of numbers used for counting sheep. Recent immigrants, especially from the Commonwealth, speak many other languages, including Bengali, Cantonese, Hindi, Punjabi and Urdu. The United Kingdom has the largest number of Hindi speaking peoples outside of the Indian sub continent.
Culture
Urdu The United Kingdom contains many of the world's leading universities, including the University of Cambridge, the University of Oxford and the University of London (which incorporates, amongst others, Imperial College and University College London), and has produced many great scientists and engineers including Sir Isaac Newton, Charles Darwin and Isambard Kingdom Brunel; the nation is credited with many inventions including the locomotive, vaccination, television, vacuum, and both the internal combustion and the jet engine. The English language has spread to all corners of the world (primarily because of the country’s empire) and is referred to as a ‘global language’. It is now taught as a second language more than any other around the world. Over the next few decades, it is estimated that approximately half the world’s population will be proficient in the language. Playwright William Shakespeare is arguably the most famous writer in the history of the English language; other well-known writers from the United Kingdom include the Brontë sisters (Charlotte, Emily, and Anne), Jane Austen, William Thackeray, J. R. R. Tolkien, John Milton, H. G. Wells and Charles Dickens. Important poets include Lord Byron, Robert Burns, Lord Tennyson and William Blake. Notable composers from the United Kingdom have included William Byrd, John Taverner, William Lawes, John Dowland, Thomas Tallis, and Henry Purcell from the 16th and early 17th centuries, and, more recently, Sir Edward Elgar, Sir Arthur Sullivan (most famous for working with librettist Sir W. S. Gilbert), Ralph Vaughan Williams and Benjamin Britten in the 19th and 20th. George Frideric Handel spent most of his composing life in England. The BBC is the oldest and perhaps the most respected broadcasting network on the globe, with the BBC World Service radio channel and its news output held in particularly high regard. The other main television networks are ITV, Channel 4, five (TV) and Sky Television. Popular programmes in the UK include the three soaps Eastenders, Coronation Street and Emmerdale, as well as the comedy news quiz Have I Got News For You and Reality TV shows Big Brother and The X Factor. Various British TV formats have been exported to other nations, notably Who Wants To Be A Millionaire?, The Weakest Link and The Office. The UK was, with the US, one of the two main contributors in the development of rock and roll, and the UK has provided some of the most famous rock stars, including the Beatles, Queen, Led Zeppelin, Pink Floyd, the Rolling Stones, The Who and many others. The UK was at the forefront of punk rock music in the 1970s with bands such as the Sex Pistols and The Clash, and the subsequent rebirth of heavy metal with bands such as Motörhead and Iron Maiden. In mid to late '90s, the Britpop phenomenon has seen bands such as Oasis, Blur, Radiohead and Coldplay gain international fame. The UK is also at the forefront of electronica, with British artists such as Aphex Twin, Talvin Singh, Nitin Sawhney and Lamb at the cutting edge. The United Kingdom was also associated with music from the Caribbean, with a large number of Jamaicans and other Caribbean nationals being present in the UK.
Sport
A great number of major sports originated in the United Kingdom, including football, golf, cricket, rugby, tennis and boxing. The national sport of the UK is association football, but the UK does not compete as a nation in any major football tournament. Instead, the home nations compete individually as England, Wales, Scotland and Northern Ireland. It is because of this unique four-team arrangement that the UK currently does not compete in football events at the Olympic Games. However, a united team will probably take part in the 2012 Summer Olympic Games, as these are hosted in London. The English and Northern Irish football associations have confirmed participation in this team while the Scottish FA and the Welsh FA have declined to participate. The UK also hosts many world-renowned football clubs, such as Manchester United, Liverpool, Chelsea and Arsenal in England and Rangers and Celtic in Scotland. Clubs compete in national leagues and competitions and some go on to compete in European competitions. Both forms of rugby are national sports. Rugby League originates from and is generally played in the North of England, whilst Rugby Union is played all over Britain. In Rugby League the UK plays as one nation - Great Britain - whilst in union it is represented by the four nations. England are the current holders of the Rugby Union World Cup. Every four years the British and Irish Lions (comprising the best players from England, Scotland, Wales and Ireland) tour other countries. Cricket is also played in the UK, although it is focussed in England. The Wimbledon Championships are an international tennis event held in Wimbledon in south London every summer and are seen as the most prestigious of the tennis calendar. Golf is one of the most popular participation sports played in the UK and St Andrews in Scotland is the sport's home course.
Miscellaneous topics

External links

- [http://www.bbc.co.uk/history/state/nations/ BBC Nations] History of the nations within the UK.
- [http://www.bbc.co.uk British Broadcasting Corporation (BBC)]
- [http://www.cia.gov/cia/publications/factbook/geos/uk.html CIA World Factbook: UK.]
- [http://www.direct.gov.uk Gateway to UK governmental services and websites.]
- [http://www.number-10.gov.uk Number 10 Downing Street]
- [http://www.statistics.gov.uk Office of National Statistics]
- [http://www.opsi.gov.uk Office of Public Sector Information] Source for all UK legislation 1987-present (successor to Her Majesty's Stationery Office).
- [http://www.macs.hw.ac.uk/britishisles/ The British Isles] Independent view of the UK.
- [http://www.royal.gov.uk The British Monarchy]
- [http://www.parliament.uk/ The United Kingdom Parliament]
- [http://www.statistics.gov.uk/StatBase/Product.asp?vlnk=5703&Pos=&ColRank=1&Rank=272 Official Yearbook of the UK] factbook produced by the Office for National Statistics (years 2000 to 2005 available online).
- [http://www.ukcities.co.uk UK Cities] lists a variety of useful resources for every city in the UK.
- [http://www.justuk.org UK travel guide] United Kingdom for travellers.
- [http://www.world66.com/europe/unitedkingdom World66 Guide to United Kingdom] A travel guide written by its users.
- [http://www.multimap.co.uk www.multimap.co.uk] provides online maps and aerial photographs of the UK.
- [http://www.streetmap.co.uk www.streetmap.co.uk] an alternative to multimap.
- [http://www.freeworldmaps.net/europe/united-kingdom/map.html Physical map of United Kingdom.]
- [http://www.upmystreet.com www.upmystreet.com] detailed localised information about places in the United Kingdom.
- [http://www.parks.it/world/UK/Eindex.html UK Parks] National parks, Areas of Outstanding Natural Beauty and other protected areas. ----
Category:British Isles Category:European countries Category:European Union member states Category:Members of the Commonwealth of Nations Category:Monarchies A als:Grossbritannien und Nordirland zh-min-nan:Liân-ha̍p Ông-kok ko:영국 ms:United Kingdom ja:イギリス simple:United Kingdom th:สหราชอาณาจักร

Television

: Television is a telecommunication system for broadcasting and receiving moving pictures and sound over a distance. The term has come to refer to all the aspects of television programming and transmission as well. programming ]]

History

The development of television technology can be partitioned along two lines: those developments that depended upon both mechanical and electronic principles, and those which are purely electronic. From the latter descended all modern televisions, but these would not have been possible without discoveries and insights from the mechanical systems. The word television is a hybrid word, created from both Greek and Latin. Tele- is Greek for "far", while -vision is from the Latin visio, meaning "vision" or "sight". It is often abbreviated as TV or the telly.

Electromechanical television

The German student Paul Gottlieb Nipkow proposed and patented the first electromechanical television system in 1885. Nipkow's spinning disk design is credited with being the first television image rasterizer. However, it wasn't until 1907 that developments in amplification tube technology made the design practical. Meanwhile, Constantin Perskyi had coined the word television in a paper read to the International Electricity Congress at the International World Fair in Paris on August 25, 1900. Perskeyi's paper reviewed the existing electromechanical technologies, mentioning the work of Nipkow and others. 1900 In 1911, Boris Rosing and his student Vladimir Kosma Zworykin achieved a television system that used a mechanical mirror-drum scanner to transmit, in Zworykin's words, "very crude images" over wires to the electronic Braun tube (cathode ray tube) in the receiver. Moving images were not possible because, in the scanner, "the sensitivity was not enough and the selenium cell was very laggy." Zworykin later went to work for RCA to build a purely electronic television, the design of which was eventually found to violate patents by Philo Taylor Farnsworth. On March 25, 1925, Scottish inventor John Logie Baird gave a demonstration of televised silhouette images at Selfridge's Department Store in London. But if television is defined as the transmission of live, moving, half-tone (grayscale) images, and not silhouette or still images, Baird achieved this privately on October 2, 1925, and gave the world's first public demonstration of a working television system to members of the Royal Institution and a newspaper reporter on January 26, 1926 at his laboratory in London. Unlike later electronic systems with several hundred lines of resolution, Baird's vertically scanned image, using a scanning disc embedded with a double spiral of lenses, had only 30 lines, just enough to reproduce a recognizable human face. In 1928 Baird's company (Baird Television Development Company / Cinema Television) broadcast the first transatlantic television signal, between London and New York, and the first shore to ship transmission. He also demonstrated an electromechanical colour, infrared (dubbed "Noctovision"), and stereoscopic television, using additional lenses, disks and filters. In parallel he developed a video disk recording system dubbed "Phonovision"; a number of the Phonovision[http://www.tvdawn.com/tvimage.htm] recordings, dating back to 1927, still exist. In 1929 he became involved in the first experimental electromechanical television service in Germany. In 1931 he made the first live transmission, of the Epsom Derby. In 1932 he demonstrated ultra-short wave television. Baird's electromechanical system reached a peak of 240 lines of resolution on BBC television broadcasts in 1936, before being discontinued in favor of a 405 line all-electronic system. In the U.S., Charles Francis Jenkins was able to demonstrate on June 13, 1925, the transmission of the silhouette image of a toy windmill in motion from a naval radio station to his laboratory in Washington, using a lensed disc scanner with 48 lines per picture, 16 pictures per second. AT&T's Bell Telephone Laboratories transmitted half-tone images of transparencies in May 1925. But Bell Labs gave the most dramatic demonstration of television yet on April 7, 1927, when it field tested reflected-light television systems using small-scale (2 by 2.5 inches) and large-scale (24 by 30 inches) viewing screens over a wire link from Washington to New York City, and over-the-air broadcast from Whippany, New Jersey. The subjects, which included Secretary of Commerce Herbert Hoover, were illuminated by a flying spot beam and scanned by a 50-aperture disc at 16 pictures per second.

Electronic television

Herbert Hoover Although the discoveries of Nipkow, Rosing, Baird and others were extraordinary, little of their technology is used in modern television. By 1934, all electromechanical television systems were outmoded, although electromechanical broadcasts continued on some stations until 1939. A.A. Campbell-Swinton wrote a letter to Nature on the 18 June 1908 describing his concept of electronic television using the cathode ray tube, which had been invented in 1897 by the German physicist and Nobel prize winner Karl Ferdinand Braun. He proposed using an electron beam in both the camera and the receiver, which could be steered electronically to produce moving pictures. He lectured on the subject in 1911 and displayed circuit diagrams, but no one, including Swinton, knew how to realize the design. Although his system was never built, the cathode ray tube did come to be used to display images in almost all television sets and computer monitors until the invention of the LCD panel. A fully electronic system was first achieved by Philo Taylor Farnsworth on September 7, 1927, although the low-resolution, light-insensitive camera tube limited the image to a plate of glass painted black, with a straight line etched across it, rotated in front of a bright carbon arc lamp. Seven years later, on August 25, 1934, at the Franklin Institute in Philadelphia, Farnsworth gave the world's first public demonstration of a working, all-electronic television system, with 220 lines per picture, 30 pictures per second. Over a three week period, vaudeville acts, athletic and sports demonstrations, politicians, and hundreds of ordinary citizens were captured on Farnsworth's cameras in the open air and simultaneously shown on his receiving sets. Farnsworth, a Mormon farm boy from Rigby, Idaho, first envisioned his system at age 14. He discussed the idea with his high school chemistry teacher, who could think of no reason why it would not work (Farnsworth would later credit this teacher, Justin Tolman, as providing key insights into his invention). He continued to pursue the idea at Brigham Young Academy (now Brigham Young University). At age 21, he demonstrated a working system at his own laboratory in San Francisco. His breakthrough freed television from reliance on spinning discs and other mechanical parts. All modern picture tube televisions descend directly from his design. Vladimir Kosma Zworykin is also sometimes cited as the father of electronic television because of his invention of the iconoscope in 1923 and his invention of the kinescope in 1929. His design was one of the first to demonstrate a television system with all the features of modern picture tubes. His previous work with Rosing on electromechanical television gave him key insights into how to produce such a system, but his (and RCA's) claim to being its original inventor was largely invalidated by three facts: a) Zworykin's 1923 patent presented an incomplete design, incapable of working in its given form (it was not until 1933 that Zworykin achieved a working implementation), b) the 1923 patent application was not granted until 1938, and not until it had been seriously revised, and c) courts eventually found that RCA was in violation of the television design patented by Philo Taylor Farnsworth, whose lab Zworykin had visited while working on his designs for RCA. The controversy over whether it was first Farnsworth or Zworykin who invented modern television is still hotly debated today. Some of this debate stems from the fact that while Farnsworth appears to have gotten there first as an inventor, RCA brought television sets to market before Farnsworth, and it was RCA employees who first wrote the history of television. Even though Farnsworth eventually won the legal battle over this issue, he was never able to fully capitalize financially on his invention.

Color television

Most television researchers appreciated the value of color image transmission, with an early patent application in Russia in 1889 for a mechanically-scanned color system showing how early the importance of color was realized. John Logie Baird demonstrated the world's first color transmission on July 3, 1928, using scanning discs at the transmitting and receiving ends with three spirals of apertures, each spiral with filters of a different primary color; and three light sources at the receiving end, with a commutator to alternate their illumination. Color television in the United States had a protracted history due to conflicting technical systems vying for approval by the Federal Communications Commission for commercial use. Mechanically scanned color television was demonstrated by Bell Laboratories in June 1929 using three complete systems of photoelectric cells, amplifiers, glow-tubes, and color filters, with a series of mirrors to superimpose the red, green, and blue images into one full color image. In the electronically scanned era, the first color television demonstration was on February 5, 1940, when RCA privately showed to members of the FCC at the RCA plant in Camden, New Jersey, a television receiver producing images in color by a field sequential color system. CBS began non-broadcast color experiments using film as early as August 28, 1940, and live cameras by November 12. The CBS "field sequential" color system was partly mechanical, with a disc made of red, blue, and green filters spinning inside the television camera at 1,200 rpm, and a similar disc spinning in synchronization in front of the cathode ray tube inside the receiver set. RCA's later "dot sequential" color system had no moving parts, using a series of dichroic mirrors to separate and direct red, green, and blue light from the subject through three separate lenses into three scanning tubes, and electronic switching that allowed the tubes to send their signals in rotation, dot by dot. These signals were sorted by a second switching device in the receiver set and sent to red, green, and blue picture tubes, and combined by a second set of dichroic mirrors into a full color image. The first field test (i.e., broadcast) of color television was by NBC (owned by RCA) on February 20, 1941. CBS began daily color field tests on June 1, 1941. These color systems were not compatible with existing black and white television sets, and as no color television sets were available to the public at this time, viewership of the color field tests was limited to RCA and CBS engineers and the invited press. The War Production Board halted the manufacture of television and radio equipment for civilian use from April 1, 1942 to October 1, 1945, limiting any opportunity to introduce color television to the general public. The post-war development of color television was dominated by three systems competing for approval by the FCC as the U.S. color broadcasting standard: CBS's field sequential system, which was incompatible with existing black and white sets without an adaptor; RCA's dot sequential system, which in 1949 became compatible with existing black and white sets; and CTI's system (also incompatible with existing black and white sets), which used three camera lenses, behind which were color filters that produced red, green, and blue images side by side on a single scanning tube, and a receiver set that used lenses in front of the picture tube (which had sectors treated with different phosphorescent compounds to glow in red, green, or blue) to project these three side by side images into one combined picture on the viewing screen. After a series of hearings beginning in September 1949, the FCC found the RCA and CTI systems fraught with technical problems, inaccurate color reproduction, and expensive equipment, and so formally approved the CBS system as the U.S. color broadcasting standard on October 11 1950. An unsuccessful lawsuit by RCA delayed the world's first network color broadcast until June 25 1951, when a musical variety special titled simply Premiere was shown over a network of five east coast CBS affiliates. Viewership was again extremely limited: the program could not be seen on black and white sets, and Variety estimated that only thirty prototype color receivers were available in the New York area. Regular color broadcasts began that same week with the daytime series The World Is Yours and Modern Homemakers. While the CBS color broadcasting schedule gradually expanded to twelve hours per week (but never into prime time), and the color network expanded to eleven affiliates as far west as Chicago, its commercial success was doomed by the lack of color receivers necessary to watch the programs, the refusal of television manufacturers to create adaptor mechanisms for their existing black and white sets, and the unwillingness of advertisers to sponsor broadcasts seen by almost no one. In desperation, CBS bought a television manufacturer, and on September 20, 1951, production began on the first and only CBS color television model. But it was too little, too late. Only 200 sets had been shipped, and only 100 sold, when CBS pulled the plug on its color television system on October 20, 1951, and bought back all the CBS color sets it could to prevent law suits by disappointed customers. Starting before CBS color even got on the air, the U.S. television industry, represented by the National Television System Committee, worked in 1950-1953 to develop a color system that was compatible with existing black and white sets and would pass FCC quality standards, with RCA developing the hardware elements. When CBS testified before Congress in March 1953 that it had no further plans for its own color system, the path was open for the NTSC to submit its petition for FCC approval in July 1953, which was granted in December. The first publicly announced experimental TV broadcast of a program using the NTSC-RCA "compatible color" system was an episode of NBC's Kukla, Fran and Ollie on August 30, 1953. NBC made the first coast-to-coast color broadcast when it covered the Tournament of Roses Parade on January 1 1954, with public demonstrations given across the United States on prototype color receivers. A few days later Admiral brought out the first commercially made color television set using the RCA standards, followed in March by RCA's own model. Television's first prime time network color series was The Marriage, a situation comedy broadcast live by NBC in the summer of 1954. NBC's anthology series Ford Theatre became the first color filmed series that October. NBC was naturally at the forefront of color programming because its parent company RCA manufactured the most successful line of color sets in the 1950s. CBS and ABC, which were not affiliated with set manufacturers, and were not eager to promote their competitor's product, dragged their feet into color, with ABC delaying its first color series (The Flintstones and The Jetsons) until 1962. The Du Mont network, although it did have a television-manufacturing parent company, was in financial decline by 1954 and was dissolved two years later. Thus the relatively small amount of network color programming, combined with the high cost of color television sets, meant that as late as 1964 only 3.1 percent of television households in the U.S. had a color set. NBC provided the catalyst for rapid color expansion by announcing that its prime time schedule for fall 1965 would be almost entirely in color (the exception being I Dream of Jeannie). All three broadcast networks were airing full color prime time schedules by the 1966–67 broadcast season. But the number of color television sets sold in the U.S. did not exceed black and white sales until 1972, which was also the first year that more than fifty percent of television households in the U.S. had a color set. In Mexico, Guillermo González Camarena (1917–1965), invented the early color television transmission system. He received patents for color television systems in 1940 (U.S. Patent 1942 (2296019), 1960 and 1962. The 1942 patent was for a mechanically scanned color filter adapter for an existing monochrome electronic transmission system. In August 31, 1946 he sent his first color transmission from his lab in the offices of The Mexican League of Radio Experiments in Lucerna St. #1, in Mexico City. The video signal was transmitted at a frequency of 115 MHz. and the audio in the 40 metre band. European color television was developed somewhat later and was hindered by a continuing division on technical standards. Having decided to adopt a higher-definition 625-line system for monochrome transmissions, with a lower frame rate but with a higher overall bandwidth, Europeans could not directly adopt the U.S. color standard, which was widely perceived as wanting anyway, because of its tint control problems. There was also less urgency, since there were fewer commercial motivations, European television broadcasters being predominantly state-owned at the time. As a consequence, although work on various color encoding systems started already in the 1950s, with the first SECAM patent being registered in 1956, many years had passed till the first broadcasts actually started in 1967. Unsatisfied with the performance of NTSC and of initial SECAM implementations, the Germans unveiled PAL (phase alternating line) in 1963, staying closer to NTSC but borrowing some ideas from SECAM. The French continued with SECAM, notably involving Russians in the development. The first regular colour broadcasts in Europe were by BBC2 beginning on July 1, 1967, using PAL. Germans did their first broadcast in September (PAL), while the French in October (SECAM). PAL was eventually adopted by West Germany, the UK, Australia, New Zealand, much of Africa, Asia and South America, and most Western European countries except France. In addition to France and Luxembourg, SECAM was adopted by Soviet Union, much of Eastern Europe, much of Africa and of the Middle East. Both systems broadcast on UHF frequencies, the VHF being used for legacy black and white, 405 lines in UK or 819 lines in France, till the beginning of the eighties. It should be noted that some British television programmes, particularly those made by or for ITC Entertainment, were made in colour before the introduction of colour television to the UK, for the purpose of sales to US networks. The first British show to be made in colour was the drama series The Adventures of Sir Lancelot (1956-57), which was initially made in black and white but later shot in colour for sale to the NBC network in the United States. In Japan, NHK introduced color television in the year 1960.

Broadcast television

NHK The first regularly scheduled television service in the United States began on July 2, 1928. The Federal Radio Commission authorized C.F. Jenkins to broadcast from experimental station W3XK in a suburb of Washington, D.C. But for at least the first eighteen months, only silhouette images from motion picture film were broadcast due to the narrow 10kHz bandwidth allotted by the FRC. General Electric's experimental station in Schenectady, New York, on the air sporadically since January 13, 1928, was able to broadcast reflected-light, 48-line images via shortwave as far as Los Angeles, and by September was making four television broadcasts weekly. CBS's New York City station W2XAB began broadcasting the first regular seven days a week television schedule in the United States on July 21, 1931, with a 60-line electromechanical system. The first broadcast included Mayor Jimmy Walker, the Boswell Sisters, Kate Smith, and George Gershwin. The service ended in February 1933. By 1935, electromechanical television broadcasting had ceased in the United States except for a handful of stations run by public universities that continued to 1939. The Federal Communications Commission saw television in the continual flux of development with no consistent technical standards, hence all such stations in the U.S. were granted only experimental and not commercial licenses, hampering television's economic development. Just as importantly, Philo Farnsworth's 1934 demonstration of an all-electronic system pointed the direction of television's future. On June 15, 1936, Don Lee Broadcasting began a month-long demonstration of all-electronic television in Los Angeles on W6XAO (later KTSL) with a 300-line image from motion picture film. RCA demonstrated in New York City a 343-line electronic television broadcast, with live and film segments, to its licensees on July 7, 1936, and made its first public demonstration to the press on November 6. By April 1939, regularly scheduled 441-line electronic television broadcasts were available in New York City and Los Angeles, and by November on General Electric's station in Schenectady. With the adoption of NTSC television engineering standards in 1941, the FCC saw television ready for commercial licensing, with the first such licenses issued to NBC and CBS owned stations in New York on July 1, 1941, followed by Philco's station in Philadelphia. Electromechanical broadcasts began in Germany in 1929, but were without sound until 1934. Network electronic service started on March 22, 1935, on 180 lines using only telecine transmission of film or an intermediate film system. Live transmissions began on January 15, 1936. The Berlin Summer Olympic Games were televised, using both direct television and intermediate film cameras, to 28 public television rooms in Berlin and Hamburg in August 1936. The Germans had a 441-line system on the air in February 1937, and during World War II brought it to France, where they broadcast off the Eiffel Tower. The first British television broadcast was made by Baird Television's electromechanical system over the BBC radio transmitter in September 1929. Baird provided a limited amount of programming five days a week by 1930. On August 22, 1932, BBC launched its own regular service using Baird's 30-line electromechanical system, continuing until September 11, 1935. On November 2, 1936 the BBC began broadcasting a dual-system service, alternating on a weekly basis between Marconi-EMI's 405-line standard and Baird's improved 240-line standard, from Alexandra Palace in London, making the BBC the world's first regular high-definition television service. The corporation decided that Marconi-EMI's electronic picture gave the superior picture, and the Baird system was dropped in February 1937. The outbreak of the Second World War caused the BBC service to be suspended on September 1, 1939, resuming from Alexandra Palace on June 7, 1946. The Soviet Union began offering 30-line electromechanical test broadcasts in Moscow on October 31, 1931, and a commercially manufactured television set in 1932. The first experimental transmissions of electronic television took place in Moscow on March 9, 1937, using equipment manufactured and installed by RCA. Regular broadcasting began on December 31, 1938. The first regular television transmissions in Canada began in 1952 when the CBC put two stations on the air, one in Montreal, Quebec on September 6, and another in Toronto, Ontario two days later. two days later The first live transcontinental television broadcast took place in San Francisco, California from the Japanese Peace Treaty Conference on September 4, 1951. In 1958, the CBC completed the longest television network in the world, from Sydney, Nova Scotia to Victoria, British Columbia. Reportedly, the first continuous live broadcast of a breaking news story in the world was conducted by the CBC during the Springhill Mining Disaster which began on October 23 of that year. Programming is broadcast on television stations (sometimes called channels). At first, terrestrial broadcasting was the only way television could be distributed. Because bandwidth was limited, government regulation was normal. In the U.S., the Federal Communications Commission allowed stations to broadcast advertisements, but insisted on public service programming commitments as a requirement for a license. By contrast, the United Kingdom chose a different route, imposing a television licence fee on owners of television reception equipment, to fund the BBC, which had public service as part of its Royal Charter. Development of cable and satellite means of distribution in the 1970s pushed businessmen to target channels towards a certain audience, and enabled the rise of subscription-based television channels, such as HBO and Sky. Practically every country in the world now has developed at least one television channel. Television has grown up all over the world, enabling every country to share aspects of their culture and society with others. By the late 1980s, 98% of all homes in the U.S. had at least one TV set. On average, Americans watch four hours of television per day. An estimated two-thirds of Americans got most of their news about the world from TV, and nearly half got all of their news from TV. These figures are now estimated to be significantly higher.

Technology

Broadcasting

There are many means of distributing television broadcasts, including both analogue and digital versions of:
- Terrestrial television
- Stratovision (From aircraft flying in a loop)
- Satellite television
- Cable television
- MMDS (Wireless cable)

Receiving

Television sets

In television's electromechanical era, commercially made television sets were sold from 1928 to 1934 in the United Kingdom, United States, and Russia. The earliest commercially made sets sold by Baird in the U.K. and the U.S. in 1928 were radios with the addition of a television device consisting of a neon tube behind a mechanically spinning disk (the Nipkow disk) with a spiral of apertures that produced a red postage-stamp size image, enlarged to twice that size by a magnifying glass. The "televisor" was also available without the radio. The Baird televisor sold in 1930-1933 is considered the first mass-produced set, selling about a thousand units. The first commercially made electronic television sets with cathode ray tubes were manufactured by Telefunken in Germany in 1934, followed by other makers in Britain (1936) and America (1938). The cheapest of the pre-War World II factory-made American sets, a 1938 image-only model with a 3-inch (8 cm) screen, cost US$125, the equivalent of US$1,732 in 2005. The cheapest model with a 12-inch (30 cm) screen was $445 ($6,256). An estimated 19,000 electronic television sets were manufactured in Britain, and about 1,600 in Germany, before World War II. About 7,000-8,000 electronic sets were made in the U.S. before the War Production Board halted manufacture in April 1942, which resumed in October 1945. Television usage in the United States skyrocketed after World War II with the lifting of the manufacturing freeze, war-related technological advances, the gradual expansion of the television networks westward, the drop in set prices caused by mass production, increased leisure time, and additional disposable income. While only 0.5% of U.S. households had a television set in 1946, 55.7% had one in 1954, and 90% by 1962. In Britain, there were 15,000 television households in 1947, 1.4 million in 1952, and 15.1 million by 1968. For many years different countries used different technical standards. France initially adopted the German 441-line standard but later upgraded to 819 lines, which gave the highest picture definition of any analogue TV system, approximately four times the resolution of the British 405-line system. Eventually the whole of Europe switched to the 625-line PAL standard, once more following Germany's example. Meanwhile in North America the original NTSC 525-line standard from 1941 was retained. NTSC Television in its original form involves sending images and sound over radio waves in the VHF and UHF bands, which are received by a television set. Over-the-air broadcast television requires an antenna (aerial). This can be an outdoor Yagi antenna. In strong signal areas the antenna can be indoors, attached to or near the receiver, such as an adjustable dipole antenna called "rabbit ears" for the VHF band and a small loop antenna for the UHF band.

Specifications

Modern displays

Starting in the 1990s, modern television sets diverged into three different trends:
- standalone TV sets;
- integrated systems with DVD players and/or VHS VCR capabilities built into the TV set itself (mostly for small size TVs with up to 21" screen, the main idea is to have a complete portable system);
- component systems with separate big-screen video monitor, tuner, audio system which the owner connects the pieces together as a high-end home theater system. This approach appeals to videophiles who prefer components that can be upgraded separately. There are many kinds of video monitors used in modern TV sets. The most common are direct view CRTs for up to 40in (100cm) (in 4:3) and 46in (115cm) (in 16:9) diagonally; most big screen TVs (up to over 100 inch (254 cm)) use projection technology. Three types of projection systems are used in projection TVs: CRT-based, LCD-based, and DLP(reflective micromirror chip)-based. Modern advances have brought flat panels to TV that use active matrix LCD or plasma display technology. Flat panel LCDs and plasma displays are as little as 4in (10cm) thick and can be hung on a wall like a picture or put over a pedestal. They are multifunctional, because they are used like computer monitors too (VGA and DVI or HDMI connections). Some TVs integrate a pair of ports to connect computer cases and peripherals to it or to connect the set to an A/V home network (HAVI) (USB port for cord connection and BlueTooth/WiFi for wireless). Today, some LCD and Plasma sets have SD Card slots, so users can view pictures from a digital camera. On the new Panasonic LCDs and Plasmas (Viera), users have the capability to record onto SD card and then play it back on a hand-held PC or digital camera (anything that allows MPEG4). With SD cards now available with 1G of memory (soon 2GB, and Panasonic is also working on one that contains over 30GB of memory), a user can record over 1,000 minutes at low quality, and around 80 minutes on the highest quality. The playback of the recording is not brilliant, but these are the first generation. They will get better with time.

Signal connections

The number of ways to connect a video device to a television has increased over the years: WiFi
- HDMI - a compact 19 to 29 pin connector that carries digital video and digital audio signals. Essentially an enhanced version of DVI that includes digital audio. This is the most advanced form of connection currently available. DVI
- DVI - a 17 to 29 pin connector that carries digital video signals, designed to carry HDTV but also used in current DVD players and latest digital displays. Copy protection is available using HDCP. HDCP
- Component video - three separate RCA jacks (colored red, green and blue) carry three video signals, one brightness (luminance) and two colors (chromas), and is usually referred to as "Y, B-Y, R-Y", "Y Cr Cb" (interlaced) or "Y Pr Pb" (progressive), or YUV. Audio is not carried on this cable. This connection provides for picture quality superior to S-Video and is typically used in home theater for DVDs, satellite and analogue HDTV; less common in Europe but is starting to become more widely available. Europe
- SCART - a large 21 pin connector that may carry: one video signal composite video; or two video signals S-Video; or for picture quality similar to component video, three signals of separate red, green and blue or RGB; or for best picture quality, four video signals of separate red, green, blue and sync or RGBS; plus right and left line-level audio channels; along with a number of control signals including an aspect-ratio flag (e.g. widescreen). This system has been standard in Europe since mid-1980s for all consumer electronics, which meant that RGBS was available on even the earliest PAL DVD players and satellite receivers. Japan uses a 21 pin RGB connector which is visually similar to SCART but with different pin configurations. Japan
- S-Video - small round connector with two separate video signals, one carrying brightness (luminance), the other carrying color (chroma). Also referred to as Y/C video. Provides most of the benefit of component video, with slightly less color fidelity. Use started in the 1980s for S-VHS, Hi-8, and early NTSC DVD players to relay high quality video before component was available. Audio is not carried on this cable. Hi-8
- Composite video - The most common form of connecting external devices, putting all the video information into one signal. Most televisions provide this option with a yellow RCA jack. Audio is not carried on this cable, though two separate cables with similar red and white RCA jacks for right and left line-level audio are commonly bonded to composite video cables.
- Coaxial RF - All audio channels and picture components are transmitted through one coaxial cable and modulated on a radio frequency. Most TVs manufactured during the past 15–20 years accept coaxial connection, and the video is typically "tuned" on channel 3 or 4. This is the type of cable usually used for cable television. Most modern DVD players and other video devices no longer modulate RF output, so very old TV sets made before composite video jacks became commonplace will need a modulator.

Aspect ratios

Mechanically scanned television as first demonstrated by John Logie Baird in 1926 used a 7:3 vertical aspect ratio, oriented for the head and shoulders of a single person in close-up. Most of the early electronic TV systems from the mid-1930s onward shared the same aspect ratio of 4:3 which was chosen to match the Academy Ratio used in cinema films at the time. This ratio was also square enough to be conveniently viewed on round cathode-ray tubes (CRTs), which were all that could be produced given the manufacturing technology of the time. (Today's CRT technology allows the manufacture of much wider tubes, and the flat screen technologies which are becoming steadily more popular have no aspect ratio limitations at all.) The BBC's television service used a more squarish [http://tcc.members.beeb.net/tchistory.html 5:4] ratio from 1936 to circa 1949, when it too switched to a 4:3 ratio. In the 1950s, movie studios moved towards widescreen aspect ratios such as Cinerama in an effort to distance their product from television. Although this was initially just a gimmick widescreen is still the format of choice today and square aspect ratio movies are rare. Some people argued that widescreen is actually a disadvantage when showing objects that are tall instead of panoramic, others would say that natural vision is more panoramic than tall, and therefore widescreen is easier on the eye. The switch to digital television systems has been used as an opportunity to change the standard television picture format from the old ratio of 4:3 (approximately 1.33:1) to an aspect ratio of 16:9 (approximately 1.78:1). This enables TV to get closer to the aspect ratio of modern widescreen movies, which range from 1.78:1 through 1.85:1 to 2.35:1. There are two methods for transporting widescreen content, the better of which uses what is called anamorphic widescreen format. This format is very similar to the technique used to fit a widescreen movie frame inside a 1.33:1 35mm film frame. The image is squashed horizontally when recorded, then expanded again when played back. The anamorphic widescreen 16:9 format was first introduced via European PAL-Plus television broadcasts and then later on "widescreen" DVDs; the ATSC HDTV system uses straight widescreen format, no image squashing or expanding is used. Recently "widescreen" has spread from television to computing where both desktop and laptop computers are commonly equipped with widescreen displays, and it remains to be seen whether Work or movie enjoyment will take over. There are some complaints about distortions of movie picture ratio due to some DVD playback software not taking account of aspect ratios; but this will subside as the DVD playback software matures. Furthermore, computer and laptop widescreen displays are in the 16:10 aspect ratio both physically in size and in pixel counts, and not in 16:9 of consumer televisions, leading to further complexity. This was a result of widescreen computer display engineers' uninformed assumption that people viewing 16:9 content on their computer would prefer that an area of the screen be reserved for playback controls or subtitles, as opposed to viewing content full-screen.

Aspect ratio incompatibility

The television industry changing aspect ratios is not without teething difficulties, and can present a considerable problem. Displaying a widescreen aspect (rectangular) image on a conventional aspect (square) display can be shown:
- in "letterbox" format, with black horizontal bars at the top and bottom
- with part of the image being cropped, usually the extreme left and right of the image being cut off (or in "pan and scan", parts selected by an operator)
- with the image horizontally compressed A conventional aspect (square) image on a widescreen aspect (rectangular) display can be shown:
- in "pillarbox" format, with black vertical bars to the left and right
- with upper and lower portions of the image cut off
- with the image horizontally distorted A common compromise is to shoot or create material at an aspect ratio of 14:9, and to lose some image at each side for 4:3 presentation, and some image at top and bottom for 16:9 presentation. Horizontal expansion has advantages in situations in which several people are watching the same set, as it compensates for watching at an oblique angle.

Sound

Television add-ons

Today there are many add-ons for the television set. A few add-ons include Video Game Consoles, VCRs, Cable Boxes, Satellite Boxes, DVD players, or Digital Video Recorders, the television add-on market is ever growing.

New developments

- Broadcast flag
- CableCARD™
- Digital Light Processing (DLP)
- Digital Rights Management (DRM)
- Digital television (DTV)
- Digital Video Recorders
- Direct Broadcast Satellite TV (DBS)
- DVD
- Flicker-free (100Hz)
- High Definition TV (HDTV)
- High-Definition Multimedia Interface (HDMI)
- IPTV
- Internet television
- LCD and Plasma display Flat Screen TV
- Pay Per View
- Picture-in-picture (PiP)
- Video on-demand (VOD)
- Ultra High Definition Video (UHDV)
- Web TV

Geographical usage

Content

Advertising

Since their inception in the USA in 1941, TV commercials have become one of the most effective, most pervasive, and most popular methods of selling products of many sorts, especially consumer goods. U.S. advertising rates are determined primarily by Nielsen ratings. The exception to this is the publicly-funded British Broadcasting Corporation.

Programming

Getting TV programming shown to the public can happen in many different ways. After production the next step is to market and deliver the product to whatever markets are open to using it. This typically happens on two levels: #Original Run or First Run - a producer creates a program of one or multiple episodes and shows it on a station or network which has either paid for the production itself or to which a license has been granted by the producers to do the same. #Syndication - this is the terminology rather broadly used to describe secondary programming usages (beyond original run). It includes secondary runs in the country of first issue, but also international usage which may or may not be managed by the originating producer. In many cases other companies, TV stations or individuals are engaged to do the syndication work, in other words to sell the product into the markets they are allowed to sell into by contract from the copyright holders, in most cases the producers. In most countries, the first wave occurs primarily on FTA television, while the second wave happens on subscription TV and in other countries. In the U.S. however, the first wave occurs on the FTA networks and subscription services, and the second wave travels via all means of distribution. First run programming is increasing on subscription services outside the U.S., but few domestically produced programs are syndicated on domestic FTA elsewhere. This practice is increasing however, generally on digital only FTA channels, or with subscriber-only first run material appearing on FTA. Unlike the U.S., repeat FTA screenings of a FTA network program almost only occur only on that network. Also, affiliates rarely buy or produce non-network programming that isn't intensely local.

Social aspects

Alleged dangers

Paralleling television's growing primacy in family life and society, an increasingly vocal chorus of legislators, scientists and parents are raising objections to the uncritical acceptance of the medium. For example, the Swedish government imposed a total ban on advertising to children under twelve in 1991 (see advertising). In the U.S., the [http://www.mediafamily.org/facts/facts_tveffect.shtml National Institute on Media and the Family] (not a government agency) points out that U.S. children watch an average of 25 hours of television per week and features studies showing it interferes with the educational and maturational process. A February 23 2002 article in [http://www.sciam.com/print_version.cfm?articleID=0005339B-A694-1CC5-B4A8809EC588EEDF Scientific American] suggested that compulsive television watching was no different from any other addiction, a finding backed up by reports of withdrawal symptoms among families forced by

BBC

The British Broadcasting Corporation (BBC) is the national public service broadcaster of the United Kingdom (see British television). It produces programmes and information services, broadcasting on television, radio, and the Internet. It is the largest broadcasting corporation in the world. The BBC's main domestic services on television include BBC One, BBC Two, BBC Three, BBC Four, the news channel BBC News 24, and the children's channels CBBC and CBeebies. BBC One and BBC Two are available via conventional analogue transmission — the remainder can be viewed only by those with digital reception equipment. The BBC also operates the UK's only dedicated politics channel, BBC Parliament, covering events in the British Parliament, Scottish Parliament, Welsh Assembly, and European Parliament, as well as highlights of overseas legislatures such as the US Congress. National radio services include Radio 1, Radio 2, Radio 3, and Radio 4, and BBC Radio Five Live. Digital radio services include 1Xtra, BBC 6 Music, BBC 7, BBC Five Live Sports Extra, and the BBC Asian Network. There is also a huge catalogue of BBC Local Radio stations (such as BBC Hereford and Worcester), Open Centres, BBC Buses, and BBC Big Screens. In addition the BBC operates the BBC World Service on radio, funded by and operated in cooperation with the Foreign and Commonwealth Office. The BBC's commercial operations are run by BBC Worldwide. These include its international television services which are funded commercially and include the international news channel BBC World, as well as entertainment channels BBC Prime, BBC America, BBC Canada and BBC Japan. There is also a Canadian children's channel BBC Kids. BBC Worldwide also co-runs, with Flextech, the UKTV network of stations in the UK, producers of amongst others UKTV Gold. In Australia and New Zealand, BBC Worldwide runs the UK.TV network jointly with Foxtel and Fremantle Media. The BBC produces a large body of programming for domestic and worldwide broadcast. Many programmes (especially documentaries) are sold to foreign television stations, and comedy, documentaries and historical drama productions are popular on the international DVD market. It is an autonomous corporation run by a board of governors appointed by the government for a term of four years (formerly five years). This is soon to be changed to a BBC trust. Management of the organisation is in the hands of a Director-General appointed by the governors. Its domestic programming and broadcasts are funded by levying television licence fees upon the owners of television sets.

History

television licence broadcast]] The British Broadcasting Company was founded in 1922 by various private firms, to broadcast experimental radio services. The first transmission was on 14 November. The BBC, with John Reith as general manager, took on its current form in 1927 when it was granted a Royal Charter of incorporation. It started experimental television broadcasting in 1932, becoming a regular service (known as the BBC Television Service) in 1936. Television broadcasting was suspended from September 1, 1939 to June 7, 1946 during the Second World War. Competition to the BBC was introduced for the first time in 1955 with the commercially and independently operated ITV. The BBC introduced a second TV channel, (BBC 2), in 1964, renaming the existing channel BBC 1. BBC 2 was broadcast in colour from July 1, 1967, and was joined by BBC 1 and ITV on November 15, 1969. Since the deregulation of the UK television and radio market in the 1980s, the BBC has faced increased competition from the commercial sector (and from the advertiser-funded public service broadcaster Channel 4), especially on satellite television, cable television, and digital television services. The BBC Research Department has played a major part in the development of broadcasting and recording techniques. In the early days it carried out essential research into acoustics, programme level measurement, and noise measurement and established standards that rapidly spread, particularly throughout the British Empire. In this respect it filled a role that is now lacking in many areas, since it was motivated by the desire for quality, not profit.

The Corporation

Funding

The principal means of funding the BBC is through the television licence. Such a licence is required to operate a broadcast television receiver within the UK. The television licence is set by the government and enforced by the criminal law but is collected privately and does not pass through the state before reaching the BBC, and hence it is inaccurate to refer to the BBC as a "state" broadcaster. A similar licence used to exist for radios, but was abolished in 1971. These licences were originally issued by the British General Post Office (GPO), which was then the regulator of public communications within the UK. For a