Brenden


 * __Mobile phone radiation__**

Radio waves have the least amount of energy so the only thing it will probably do is heat up your body. But there has been some cases that it has given a headache after a long phone call. Microwaves can affect a rat brain but not a humans brain. Electromagnetic waves are everywhere even in wireless internet.

__**How do mobile phones affect human health**__

90% of scientists say there is no risks or problems with using mobile phones. I believe that it will not be able to kill you but after a while it will heat up your skin and maybe give you a headache after a long call, and hypertensive people feel sick after they use it. It can't cause cancer unlike gamma and x-rays. There is no safe level of radiation even a cell phone antenna can cause some damage to your skin but it is very unnoticeable. Cell phone use only increases glucose use in the brain. It has been said that cell phone waveforms have been known to cure mental illnesses. Some other effects are cataracts, skin burns, deep burns, heat exhaustion, and heat stroke. The largest study in Denmark say that it can not cause cancer or serious illnesses. So the general idea is that cell phones do not cause any serious problems. To me I don't think using a mobile phone is a bad thing. There are no major risks of using one.


 * __How do cellphones use electromagnetic radiation__**

Cell phones operate with radio frequencies, a form of electromagnetic energy located on the electromagnetic spectrum. Mobile phones transmit and receive signals using high frequency microwaves. Cell phone towers only work if there is a cellular system near by. The cellular system works by dividing regions into many small cells or geographical areas. Each cell has one or more towers that relay signals to a central hub. When you place a call on a phone, the phone sends out microwaves. The microwaves have a unique number which is specific to your phone, a tower picks up the microwaves and transfers it to a hub. Then the hub channels and transmits the signal to a receiver, the receiver maybe another hub or a cell phone tower, depending on the distance between the two phones. Then the receiving phone picks up and when it does it picks up the microwave signal. In conclusion the phone sends out a wave the tower picks it up sends it to a hub then the hub sends it to a phone then the phone picks up the microwave.


 * __Conclusion__**

My opinion is that it is safe and helpful to use a cellphone. With all my research I have reason to believe that it is safe all experiments and studies that I have read do not indicate any risks or dangers using a mobile phone. It is also helpful because if you are lost you can call someone and they can help.

__**Citations**__

Padilla, Michael J., Martha Cyr, and Ioannis Miaoulis. "Wireless Communication." // Science Explorer: Sound and Light //. Needham, MA: Prentice Hall, 2000. Print.