Any electrical spark creates radio waves and acts as a transmitter. See how this lead to the radio we enjoy today.
Any electrical spark creates radio waves and acts as a transmitter. You hear sparks on a radio as interference. That's why lighting makes radios crackle, and even the tiny spark in a switch is enough to make a noise on the radio when turning on a light.
Please see http://www.secretlifeofmachines.com for more information
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