9781422282946

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S T E M I N C U R R E N T E V E N T S

hit a receiver, such as an antenna, they are converted back into the sounds that were transmitted. When you use your mobile phone, you speak into a microphone that converts your voice into electrical signals; these signals, in the form of radio waves,

A network of satellites remains in stationary orbit around the world. The satellites network together and send location information to devices worldwide.