B+Cellphone

=__Isotope and Radioactivity__= = = =Name of radioactive isotope/electromagnetic radiation/scientist:= Cell Phone = = = = =Explanation of interesting facts: (how used/works.experiments/discoveries)=
 * 1) Cell phones emit signals via radio waves, which are comprised of radio-frequency (RF) energy, a form of electromagnetic radiation
 * 2) Cell phones are used to communicate with others anytime, anywhere, in the world.
 * 3) Cell phone is just like a radio. It picks up signals from towers.
 * 4) Each cell phone has a cellular system. Each cell has a base station that consists of a tower and a small building, containing the radio equipment that allows widespread frequency to reuse across a city
 * 5) System Identification Code is a unique frequency that the phone and base station use to send signals to another about things like call set-up and channel changing. If the phone can't find any control channels to listen to, then it's out of range and will display on the phone a "no service" message.

=3 Advantages of using the radioactive isotope/radiation/benefits of discovery= 1. Allows us to communicate anywhere, anytime in the world. 2. Use other tools such as map, phone book, calculators, etc 3. Cell phones gives us entertainment such as music, games, and many more

=3 Disadvantages of using the radioactive isotope/radiation/discovery:= 1. Because people put their mobile phone to their ear, letting the radioactivity into their brain, getting brain cancer or non-cancerous tumors are more likely to happen. 2. Cell phone users had an increased risk of malignant gliomas. 3. One hour of cell phone use per day significantly increases tumor risk after ten years or more = = =Is the radioactive isotope/radiation/discovery still used today? Explain= Yes. this radiation is still used today. Mobile phones are one of the technologies that people need in this society. Although mobile phones help us greatly, we need to be aware that this is affecting our health because of the radiation. = = =References= Add your useful link to the resource page as well as this template http://www.howstuffworks.com/cell-phone-radiation.htm http://cellphones.org/how-cell-phone-works.html http://brainethics.files.wordpress.com/2006/07/save-brain2.jpg []

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