Television (TV)

Television is a widely used telecommunication medium for transmitting and receiving moving images, either monochromatic ("black and white") or color, usually accompanied by sound. "Television" may also refer specifically to a television set, television programming or television transmission. The word is derived from mixed Latin and Greek roots, meaning "far sight".Commercially available since the late 1930s, the television set has become a common communications receiver in homes, businesses and institutions, particularly as a source of entertainment and news. Since the 1970s the availability of video cassettes, laserdiscs, DVDs and now Blu-ray Discs, have resulted in the television set frequently being used for viewing recorded as well as broadcast material.
Although other forms such as closed-circuit television are in use, the most common usage of the medium is for broadcast television, which was modeled on the existing radio broadcasting systems developed in the 1920s, and uses high-powered radio-frequency transmitters to broadcast the television signal to individual TV receivers.
Broadcast TV is typically disseminated via radio transmissions on designated channels in the 54–890 megahertz frequency band.Signals are now often transmitted with surround sound in many countries. Until the 2000s broadcast TV programs were generally recorded and transmitted as an analog signal, but in recent years public and commercial broadcasters have been progressively introducing digital television broadcasting technology.
A standard television set comprises multiple internal electronic circuits, including those for receiving and decoding broadcast signals. A visual display device which lacks a tuner is properly called a monitor, rather than a television. A television system may use different technical standards such as digital television and high-definition television (HDTV). Television systems are also used for surveillance, industrial process control, and guiding of weapons, in places where direct observation is difficult or dangerous.
Amateur television is also used for experimentation, pleasure and public service events by amateur radio operators. Ham TV stations were on the air in many cities before commercial TV stations came on the air.
Today it is very common in industrialised countries for a household to have at least one television. In fact, it is so common that it is difficult to imagine a household without TV. This shows just how significant television is to us, but we can see that its importance is far greater than just being an object we own if we look at the variety of programmes and valuable content it offers and the purposes it serves in daily life. First of all, there are many different types of programmes on television that are useful. The viewer can watch a weather report to prepare for the day. Cartoons and sport provide relaxation and fun. School programmes, documentaries and the news teach us about the world. And advertisements inform us about products and new ideas. TV can be used to enhance many important aspects of everyday life. People seek entertainment and distraction, and TV can give us that in the form of films or cartoons. People want education, information and instruction because they are inquisitive and like to learn. TV gives us these in documentaries or educational programmes, in reports or cultural magazines. People enjoy creativity, and TV gives us that in the work of all the people involved in creating clever film scripts, effective scenery, witty dialogues or magnificent camera shots. TV gives us the world, other cultures, other people, languages and ideas. It introduces us to knowledge. we have seen, television offers us a wide range of valuable programmes and content and serves many purposes in our daily lives. Television not only provides many types of programmes with interesting and broad content, but also serves to fulfil our needs in terms of entertainment and knowledge.