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Questions and Answers
What type of signals replaced most of the analog signals on televisions?
What type of signals replaced most of the analog signals on televisions?
How is the sound of your voice transmitted from one telephone to another?
How is the sound of your voice transmitted from one telephone to another?
What kind of waves are sent from cell phones to cell phone towers?
What kind of waves are sent from cell phones to cell phone towers?
How did astronauts in outer space communicate with people on Earth?
How did astronauts in outer space communicate with people on Earth?
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What did scientists use to make radio wave analog signals powerful enough to transfer information from Earth to outer space?
What did scientists use to make radio wave analog signals powerful enough to transfer information from Earth to outer space?
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