Title by Sierra Wallen

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Slide Notes

Title

Published on Mar 22, 2016

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PRESENTATION OUTLINE

Cellphones, and how they work and how they use electromagnetics.

Photo by djwudi

Imagine, you talking on a cell phone to a friend.
When you talk where does your voice go?

Photo by tray

You voice then goes to the transmitter. An transmitter is an electronic device which,with the aid of an antenna , produces radio waves.

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SINE WAVE

Sine waves are measured in terms of frequency . Which is a number of time a wave goes up and down per second.

The radio wave ( sine wave) that send out the your voice signal is made of electromagnetics radiation which then is spreaded by the antenna .

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Photo by craig1black

The function of an antenna in any radio transmitter is to launch radio waves into space ; in the case of a cell phones , these waves are picked up by a receiver in your cell phone tower.

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Photo by jbdodane

After it gets to the tower it goes to a switching center.
A switching center directs your call to the person that you dialed.

Photo by MoShotz

Sierra Wallen