Victor

Television

__ How do Television use Electromagnetic radiation? __

Radio waves are in the electromagnetic spectrum. Televisions use radio waves. Television programs send signals to satellites up in space and then these satellites send these signals to house. These signals get send by transmitting antennas. The two ways of transmitting the signals are called amplitude modulation and frequency modulation. FM and AM waves are both used in television. The AM wave is used for picture and FM wave is used for sound. A lot of technology, for example Television, radio, and telephone are received by satellites. These satellites relay these signals to earth. Cable companies and television companies use Communication satellites. Before these waves are retrieved they are changed into FM and AM waves, and then send to a satellite which sends this wave around the world.

__ How does the radiation from television affect your health? __
 Media violence can cause aggressive behaviour, to violence, nightmares, and fear of being harmed. A study looked at grownups; each grownup had watched 2 hours of TV each day. American Academy of Pediatrics (AAP) found out that “17% of them were overweight, 15% of them had higher serum cholesterol, 17% of them were smoking, and 15% of them had poor fitness”. TV can also lead to children repeating dangerous stunts which they saw on their television. Overweight can also be caused by TV, when you watch TV you normally get a snack and eat it in front of the television. Then this snack will stay on your body until you exercise, which then will increase how much you weigh. Unhealthy food will also be advertised on TV and will encourage buying it; this will lead to the problem about overweight. TV can also cause sleeping problems; researchers have found out that teens who watch 3 or more hours will have sleeping disturbances. TV has many more effects on your health, so before you begin to watch too much television think of how little you use your brain watching TV compared to when you are doing any physical activities. So just reflect next time before you sit down and watch television, if there was anything else you could spend your time doing.



Sources

Boyse, Kyla. "YourChild Development and Behavior Resources." //Television and children//. N.p., 00/08/2010. Web. 2011. .

Pasachoff, Jay. "Sound and Light." (2007): 182. Print.