Aydan

How does a mobile phone use electromagnetic radiation? A cell phone uses high frequency microwaves. A high frequency microwave is a wave that travels fast, but with a low amplitude. When you call someone from a phone, the phone sends out microwaves, which have your phone code, they it goes to the satellite. The satellite then goes to a receiver, which then receives the call, and sends it to the person's phone.  A satellite can only "see" part of the earth. There are multiple satellites, to receive calls from all over the world.

How does a phone affect your health? A telephone whether it be mobile or not is not harmful to the body. The most damage a phone can do is heat up your tissue, but your body gets warmer when you have about one hour of exercise, and when your body heats up you have a system inside you that cools you're body down. However after 50 minutes on the phone your brain activity increases,and uses more sugar. Tests show that a person could not tell the difference between a muted phone and a phone that is turned off. Tests also show that there is a 7% increase in glucose in parts of the brain close to the antenna. Experts in the UK say there is no concern of a health risk, scientists are still trying to find out if this is harmful or not.

Sources, Rose, Botting. //Sound and Light//. 20. Boston, Massachutsetts : Prentice Hall, 90-95. Print.

"Mobile Phones 'affect the brain'."//http://www.bbc.co.uk/news/health-12541117//. BBC News, 23/2/2011. Web. 16 May 2011.

"Mobile Phone and Health."//http://www3.ntu.edu.sg/home/eylu/fdtd/phone0.htm//. N.p., 7/10/1010. Web. 16 May 2011.