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Television-presentation-

DR INZ. ZDZISŁAW PÓLKOWSKI

Polkowice-2015

University of Pitesti andDolnośląska Wyższa Szkoła Przedsiębiorczości i Techniki w

Polkowicach

STUDENT: CONSTANTIN IONUT

The History of Radio

In 1898 Guglielmo Marconi, a 24-year-old Italian, began the world's first commercial radio service. For citizens of the United States, radio—and later television—not only introduced an abundance of entertainment and information, it also raised many legal questions surrounding its implementation and regulation. In radio's earliest days, stations all broadcast at the same frequency; this situation posed problems because although some stations agreed to share their time, others attempted to broadcast stronger signals over those of their competitors. Problems continued even when stations began to broadcast on separate frequencies.

Guglielmo Marconi

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http://legal-dictionary.thefreedictionary.com/

In its infancy, broadcasting was much less controversial. Experimental radio broadcasting began in 1910 when Lee De Forest produced a program from the Metropolitan Opera House in New York City. Other experimental radio stations were started at the University of Wisconsin in Madison in 1915 and another in Wilkinsburg, Pennsylvania, a suburban of Pittsburgh, in 1916. Inventor of the Audion vacuum tube, Lee De Forest made possible live radio broadcasting before the invention of the transistor. Lee De Forest was born August 26, 1873 in Council Bluffs, Iowa. He invented the Audion vacuum tube, which made possible live radio broadcasting and became the key component of all radio, telephone, radar, television, and computer systems. Although bitter over the financial exploitation of his inventions by others, he was widely honored as the “father of radio” and the “grandfather of television.” http://historysanjose.org/

http://www.biography.com/

The period from 1925 to 1950 has been called the "Golden Age of Radio." During this period radio was a major source of family entertainment. Every night families would gather around the radio and listen to news, music, comedies, and adventure dramas. Serialized stories aimed mainly at women, dubbed "soap operas," became popular. They were called soap operas because they were initially sponsored by soap companies. President Franklin Roosevelt became the first president to understand the power of radio. He regularly conducted "fireside chats" over the radio between 1933 and 1945. These informal talks helped Roosevelt gain support for his policies.

The importance of radio as a national medium was reinforced during World War II. Edward R. Murrow became a national figure when he broadcast from London during the early years of the war. Following the U.S. entrance into the war in December 1941, millions of Americans turned to the radio every day to hear the latest war news.

The Golden Age of Radio

http://legal-dictionary.thefreedictionary.com/ http://www.theguardian.com/

Advantages and disadvantages of radio

• Some of the Advantages of Radio are:• Radio is one of the media which covers huge population.• Radio can be enjoyed at home, in office, while driving.• You can listen radio in your regional language.• Radio is also favorite of large number of population.• You can advertise your product on radio and the rate of advertisement is

usually lower than other medium of communication.• Important information or news can be easily spread on radio.• For local market radio is one of the powerful medium of communication.• Some of the Disadvantages of Radio are:• Only an audio medium for communication.• During bad weather you cannot listen radio properly. Often unclear and is

affected by weather.• You need to adjust frequency properly.• Less and limited radio channels are available compared to other

communication medium.

http://frndzzz.com/Advantages-and-Disadvantages-of-Radio

The History of Television

In 1928, General Electric (GE) displayed the first presentation on a television, but it was quite some time before the invention became a practical reality. The 1930s brought an excitement to those conducting experiments on the new technology. They predicted that television would be as much a part of the life of the United States as radio had become.

In 1939, the National Broadcasting Company (NBC) brought television to the world during the New York World's Fair, and on February 1, 1940, it conducted the first official network television broadcast in the United States.

In 1941, the FCC officially authorized commercial television, transferred television sound from AM to FM, and increased the resolution standards for broadcasts. By 1948, a total of 36 television stations were broadcasting and over 1 million television sets were receiving. So many applications for new stations were coming in to the FCC that a freeze on requests was instituted.

In 1952, the freeze was lifted and 70 ultrahigh frequency (UHF) channels were added to those already available. By 1953, nearly 400 stations were providing coverage to nearly 90 percent of the United States; no medium in history could compare to television in its record-breaking implementation. http://legal-dictionary.thefreedictionary.com/Radio+and+Television+Broadcasting

The first mechanical television station in America was called W3XK. This station was the brainchild of Charles Francis Jenkins, who is also remembered as the father of American television. The station aired its first broadcast on 2nd July, 1928.WRGB television station in New York is the first American station that has the honor of being a continuously operating station from 1926, when television was invented, till date. The station began as W2XB, but the name was changed to WRGB in 1942, in memory of Mr. Walter R. G. Baker, who was a leader in the radio and television industry. The first commercially produced television sets were based on the mechanical television system. These sets were made from John Baird’s designs for television. The sets were shown to the public in September of 1928. The first ever American electronic television sets were produced in 1938 and were an instant hit.The first ever remote control for television was invented in 1948. Known as the ‘Tele Zoom’, it cannot be called a remote control in the true sense of the word, as the device could only enlarge the picture on the tube and not change any channels or turn the television set on and off. The Flash-matic from Zenith, produced in 1955, was the first ever real remote control that could do all of the above and was completely wireless.

http://www.thehistoryoftelevision.com/tv_facts.html

Evolution of the television

Important years manufacturing TVs

http://www.fastcodesign.com2015

SAMSUNG

Television - Operation Of The Cathode Ray Tube, High Definition Television, Cable Television - Television of the

future

The name television means distance seeing. Television, or TV, is the technology used to transmit pictures with sound using radio frequency and microwave signals or closed-circuit connections. Television operates on two principles that underlie how the human brain perceives the visual world. First, if an image is divided into a group of very small colored dots (called pixels), the brain is able to reassemble the individual dots to produce a meaningful image. Second, if a moving image is divided into a series of pictures, with each picture displaying a successive part of the overall sequence, the brain can put all the images together to form a single flowing image. The technology of the television (as well as computers) utilizes these two features of the brain to present images. The dominant basis of the technology is still the cathode ray tube.

http://science.jrank.org/

In a plasma television, fluorescent lights are present instead of phosphors. Red, green, and blue fluorescent lights enable a spectrum of colors to be produced, in much the same way as with conventional television. Each fluorescent light contains a gas called plasma. Plasma consists of electrically charged atoms (ions) and electrons (negative in charge). When an electrical signal encounters plasma, the added energy starts a process where the particles bump into one another. This bumping releases a form of energy called a photon. The release of ultraviolet photons causes a reaction with phosphor material, which then glows.

The Advantages and Disadvantages of Television

• Television can be a great source of entertainment. But, as all our mothers have told us, too much can rot your brain. Is that really true? Sure: too much of anything is bad for you! That said, television has many advantages in addition to its disadvantages.

• Many people love television so much that they make their careers out of it. A great example of this is a TV anchor. These people not only get to be on television, but they get to present the news and current events to people, which is a great advantage in television. You can learn about TV anchors and what it takes to become one with this course. In it, you will learn how to use a teleprompter, general studio basics and how to make your appearance ready for the camera.

https://blog.udemy.com/advantages-and-disadvantages-of-television/

Some of the Advantages of Television (TV) are :• Television is widely used for entertainment, knowledge and for communication.• Anybody can watch television simply by sitting at home.• News, movies, family shows, sports, Music as well as other useful shows and

channels can be seen on TV.• Even kids can enjoy TV by watching Cartoons Channels as well Some

Channels such as Discovery Channel to gain knowledge.• One can watch live news as well as live shows or live sports easily with the

help of television.• Television plays an important role in educating people about corruption, going

on in the social and political world.• Television helps to upgrade knowledge and it also aware about the latest trend

going on in the world.• Various channels are available in different languages so you can see the

channel or shows of your choice in your regional language.• You can learn several languages and lots of other useful things by watching

television.• Good and effective way of advertising product or information.

Some of the Disadvantages of Television (TV) are :

• As there are thousand of shows or movies shown on TV 24/7 , Hence some people waste more time everday while watching TV.

•  If people spend much more time on watching TV then they may become lazy.

• Sometimes students do not pay attention to their studies while watching TV , which affects the education of the students.

• Some children sit very close to the TV which is not good for the Eye-sight of the children.

• More use of television may also increase electricity bill.• Children sometimes watch scary movies which affects their mental

condition• Sometime distraction from work by watching TV.

http://frndzzz.com/Advantages-and-Disadvantages-of-Television-TV

Final of presentation