We can't see the electromagnetic waves that going out of our phones.Our phones are always sending electromagnetic waves. For example : if we make a call,surf the internet,send a message...So wouldn't it be cool if we could see the signals.Have you ever wanted to know when your phone sending or recei...
By: kaanthegmr
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from Instructables: exploring - technology - robots http://ift.tt/1Ml1JIB



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