Vanessa


 * Notes:**
 * Cell phones only work if they are near a cellular system.
 * Cellular phones transmit and receive signals using high frequency microwaves.
 * If you place a call on a cellular phone you are sending microwave signals.
 * Towers near the cell phone signal pick it up and transfers the signal to the other cellular phone.
 * Cell phones are radio phones
 * Cellular phones and home phones work different.

**__How Cell Phones Use Electromagnetic Radiation? __** One question some people may be wondering about is; How do cellular phones use electromagnetic radiation? Well first off to say cell phones emit an electromagnetic field, what is a form of microwave radiation which enters the brain when you are holding a cellular phone just a bit too close to your ear (kind of almost your brain). Long term phone calls are not always the best because it sometimes causes skin damage. Each day if you are making calls that are 1-2 hours long (some people do) it could really affect your brain. Try to make each phone call everyday as shortened as possible. If maybe you were on the phone about 20-30 minutes long it will not matter as much and the longer call.

**__Cell Phones: __** How do they work? Cellular phones receive and transmit signals using high frequency microwaves. Microwaves are electromagnetic waves with wavelengths ranging as long as one meter to as short as one millimeter. Cellular phones and cordless phones are both two different things. Using a cell phone you can send text messages and even picture messages, but on a cordless phone also known as a home phone cannot send any messages the only thing it can do is call and leave a voice mail. Cell phones are made of many different types of wave signals and even though they are not visible they are really important to the phone. Without all these small things that cell phones have we would not be able to call, text, or even send pictures back and forth to one another so remember everything in a cellular phone matters. The FIRST portable cell phone was invented in 1975 by Martin Cooper of Motorola.

I have heard so many rumors about cell phones such as them making you def or causing cancer. Not all of that is true don’t believe something that comes out of somebody’s mouth take some free time out of your day and research about mobile phone health risks. There are 90% of scientists say there is no risks or problems with using mobile phones. But is that true? No that statement is not completely true. Not much happens when you are on the phone that long. You can’t get cancer easily the worst thing that can happen from a phone call is that you skin gets damaged from the energy and heat coming off the phone. Your skin could get really damaged from about 2-3 hour phone calls but not many people make that long of phone calls these days anymore with all the chatting sites and texting. The damage it could do to your skin though is not very noticeable unless you do something to make it worse. 30-40 minute phone calls a day don’t make that much of a problem because the phone is not by your ear for so long. So remember if you have been on the phone for a while that time already maybe it’s about time you give that call a rest and end it.
 * __What Effect Does This Have on Humans? __**

N.p., n.d. Web. 14 Apr 2011. []. N.p., n.d. Web. 14 Apr 2011. []. (Sorry Mrs.Vaswani i could not get the pictures on here i even tried microsoft word.)