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Do TVs affect humans by radiation?


 * TV sets can produce X-rays.
 * X-rays are produced when the electrons are made faster by high voltage.
 * It can come out through a cathode ray tube (CRT), or the television receiver.
 * The rays in a TV set are thought to be very weak, and in low doses, so it is thought not to be a danger in human health.
 * Scientists have not found any specific effects caused by a TV set.
 * It is good to use the minimum amount of time and to watch from afar in a bright room for a TV.
 * So far, there haven't been any reports of injuries cause by a TV.
 * Now, the rays coming from a TV are well controlled.
 * The TV hasn't produced a public health hazard to the people.
 * Safety circuits made the TV rays hardly dangerous (pretty much eliminated).
 * No TV's have been found that cause a hazard.
 * Note: Liquid Color Display(LCD), or Plasma TV's aren't capable of producing rays.

@http://www3.allaroundphilly.com/blogs/phoenixville/purplepress/2009/04/no-tv-challenge-students-try-to-break.html

Do TVs affect humans' health?

At the result of research, scientist say that TV's do not show much of a danger to health on humans. TV sets can produce X-rays, which are caused when electrons are accelerated by high voltage. The X-rays can come out through the cathode ray tube (CRT, for short) or the television reciever. The CRT is a vaccum tube that has an electron gun, and a fluorcent screen which produces the images that show on the TV. The X-rays that come out through a TV is thought to be very weak and in low doses, it is thought to not be a danger of human health. So far, scientist have not found any specific effects that are caused by a TV. There have not been any reports of injury that have been caused by a TV either. Now, in life, the rays produced by a TV is well controlled. The TV still hasn't caused a public health hazard to the people. Safety circuits that can be connected to a TV has eliminated the TV's rays' danger. No TV's are found so far that have caused a health hazard. Even if the TV's are not much of a health hazard to people, we should still watch TV for a minumum amount of time, and watch it from a safe distance, and in a bright room. Reading this, my opinion on this question is that TV's don't affect humans health.

Note: A Liquid Color Display (LCD), or Plasma TV's aren't able to make X-rays, and so are not a health hazard, and completely safe.

How do TV's work?


 * The TV was invented by a man named Philo T Farnsworth (living 1906- 1971).
 * It is said that in the United States, children spend more time watching TV (average 1023 hours a year) than the amount of time they spend in school (900 hours a year).
 * The TV is thought as a radio with pictures.
 * TV's uses radio waves to transmit the pictures and sounds to the TV.
 * The TV is a three part invention, having the TV camera, which turns pictures and sounds into a signal, the TV transmitter that sends the signals in the air for a TV, and the TV receiver, that takes the signals and turns them back into pictures and sounds.
 * The pictures and sounds would come on to the TV as a single picture, but the pictures are moving so fast, that it seems to be moving. The brain sees the pictures moving so fast, and they come together in your brain to become a moving picture.
 * TV cameras work by taking more than 24 pictures per second to make it look as if everything were a moving picture.
 * When a TV camera turns a picture into a signal, light detectors scan the picture, line per line (525 lines in all,) and then are sent as a signal to our TV's.
 * TV transmitters can be in the air, where there is a large antenna, which makes it easy to send the signals from a TV camera as far as possible.
 * TV transmitters are often also put on the top of hills, which also makes it easy to send the signals to our TV's.
 * TV transmitters are placed at high positions, because waves and other signals could be cushioned, or the waves could be soaked up by objects in between the transmitter and the receiver, which would make it hard to send signals from a low position, whereas it is easier to send it in a high position, since there are less objects that can absorb the signals.
 * But some TV's might have a cable plugged into it, where the signals would be piped through a fiber-optic cable put under the ground.
 * If the TV has satellite signals sent, then it is easy to send the same kind of signal to many other countries and places.
 * With cable televisions, the pictures are sent in analog form, where each signal travels in up and down movement waves.
 * A TV receiver converts the signal (satellite or cable), to the pictures and sound which it used to be. But, the TV must put the picture back in the same way a TV camera does, by processing it in lines. Different types of TV sets would do this in different ways.

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@http://www.onfrozenblog.com/2007/01/11/the-nhl-seeks-to-improve-game-broadcasts.html

@http://www.freefoto.com/preview/04-02-81?ffid=04-02-81 How do TV's work?

The TV was invented by a man named Philo T. Farmsworth (living from 1906 - 1971). Nowadays, the TV is something that kids must have. In the United States, it is said that children spend more time watching TV in a year( average 1023 hours) than the amount of time used at school( 900 hours a year). The TV is thought as a radio with pictures, and uses radio waves to transmit all of the pictures and sound used in a television. The TV is actually a three part invention, having the TV camera, which takes the pictures and turns them into a signal, the TV transmitter, that sends the signals into the air, and the TV receiver, that receives the signals and turns them into the pictures and sounds that they used to be. A TV camera, has to take over 24 pictures per second, to make the pictures look as if they were a moving picture. When the TV camera takes the pictures, the pictures get scanned by light detectors, line per line with 525 lines in all, and is sent as a signal into the TV transmitter. The TV transmitter is usually placed in high places, as if you place these in low places, there can be objects that absorb the signals, and may not reach the TV receiver. But if the transmitter is placed in a high position, then there are less objects that could absorb the signal. The transmitters are usually placed on top of hills, and also in the air. The TV receiver then would receive signals from the transmitter, and convert them into the pictures and sounds that they used to be. But, the TV must convert the signals into the pictures and sounds in the same way that the TV camera did, by scanning the signals line by line. But this is not the only way that a TV may get signals. If the television is a cable television, then your pictures are piped to your television, by a fiber optic cable that is put underneath your street. Even though the TV may look like it is showing videos, it is actually showing single pictures, just that each picture is passing so fast, that inside your brain, the pictures come together to look like a moving object.

Citations

 How do TV's work? "Television." //Explain That Stuff!//. N.p., n.d. Web. 7 Apr 2011.  .

Do TV's affect humans' health? "Use televisions safely." //FDA U.S. Food and Drug// //Administration//. U.S. Department of Health and Food Services, n.d. Web. 7 Apr 2011. <span style="-webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px; color: #333333; font-family: 'times new roman',times,serif; font-size: 12px; letter-spacing: 2px; line-height: normal;">gProducts/Consumers/ucm142625.htm>.