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admin | Category: Phone Number By Address | 17.06.2015
Use these free images for your websites, art projects, reports, and Powerpoint presentations! When talking on a cell phone, a transmitter takes the sound of your voice and encodes it onto a continuous sine wave (see How Radio Works to learn more about how sound is transmitted). Electromagnetic radiation is made up of waves of electric and magnetic energy moving at the speed of light, according to the Federal Communications Commission (FCC).
An update to our popular senior citizen cell phone, the new rugged waterproof model makes accidental drops, even into water - a non issue. With a rugged fall protection and waterproof design, this phone is so simple to use and features a great many other specs that are sure to please. A sine wave is just a type of continuously varying wave that radiates out from the antenna and fluctuates evenly through space.


All electromagnetic energy falls somewhere on the electromagnetic spectrum, which ranges from extremely low frequency (ELF) radiation to X-rays and gamma rays. In this position, there is a good chance that some of the radiation will be absorbed by human tissue. This rugged phone has a built in SOS button to enable someone to alert their contacts as quick as possible. Sine waves are measured in terms of frequency, which is the number of times a wave oscillates up and down per second. In the next section, we will look at why some scientists believe that cell phones are harmful, and you'll find out what effects these ubiquitous devices may have. Also included is a handy in-built camera for taking pictures or videos and features large and intuitive icons, bluetooth connection and more.


Once the encoded sound has been placed on the sine wave, the transmitter sends the signal to the antenna, which then sends the signal out. The position of a transmitter inside a phone varies depending on the manufacturer, but it is usually in close proximity to the phone's antenna. The radio waves that send the encoded signal are made up of electromagnetic radiation propagated by the antenna.
The function of an antenna in any radio transmitter is to launch the radio waves into space; in the case of cell phones, these waves are picked up by a receiver in the cell-phone tower.



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