Step 15Spooky Effect # 7 - There's A Woodpecker In Your Modem!
I discovered that a modem pulses at about 10 Hz, and sounds very similar to the controversial Russian Woodpecker radar transmissions. (http://en.wikipedia.org/wiki/Russian_Woodpecker).
Other electronic and electric items such as calculators, cellphones, and computers can be investigated to hear what fields they emit. Motors like a Dremel tool are also fun to listen to...but not for very long!
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