Ebony

=**__MOBILE PHONES__**= = =
 * How does your appliance affect human health?**

My appliance is a mobile phone. I think it affect poeple's health because i sometimes talk too long on the phone which gives me a headache. Scientists say that mobile phones affect human health causing usage of higher sugar level in the brain and that is very unhealthy. Some people get a headache after talking too long on the phone and some hypersensitive people feel sick when the cell phone is turned on. The main concern of non- ionizing radiation is the thermal (heating or "cooking") effect. I think that can be true. But I believe that cell phones can also be good for communication. Scientists say that cell phones radiates low level of power, a small amount of power absorbed by the human brain affects only a very small area in the brain. This forms a "hot-spot" then a small volume of brain overheated and damaged. I think this is all true but even though scientists say cell phones are bad, people still use them... (like me!)


 * How do cell phones use electromagnetic waves?**

When a mobile phone uses electromagnetic radiation it helps you communicate with another cell phone in a different area. Everyone uses electromagnetic radiation. Without electromagnetic radiation you can not make calls or text people. According to Principles of Physics, changing electric fields produces magnetic fields and those electric and magnetic fields produce electromagnetic waves. These electromagnetic waves travel with a constant velocity faster than the speed of light. When you call someone it sends out in microwaves. So when you dial the number of the phone, the microwaves travel to a tower and sends it to the other person's phone.

**__**Sources**__**

[[image:http://hotcellularphone.com/wp-content/uploads/2010/09/The-BlackBerry-Curve-9300-comes-to-Three.jpg width="153" height="232" align="right"]]
"Mobile Phone and Health." //Resources for Finding Information//. N.p., n.d. Web. 7 Apr 2011. .

"Do Mobile Phone Radiations Affect the Human Body."//Resources for Finding Information//. Health & Life Style Updates, Tuesday, October 13, 2009. Web. 7 Apr 2011. .

Chris, Woodford. "How Cell Phones Work." //Resources for Finding Information//. N.p., n.d. Web. 7 Apr 2011. .