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Listening to EM fields

December 23, 2008DIY, musiclistener

Listening to electromagnetic fields is easy and fun (you can actually listen if a wire is ‘live’ or not, provided AC current is running through). Especially laptop computers emit a lot of EM noise in audible range.

Use the electronics of an old walkman. Perhaps you have the guts of a walkman lying around, perhaps the motor and wheels have already been used to make a solar roller or whatever. Anyway, if the electronics are still in one piece, you can simply hook them up to a pair of headphones or connect them to the audio input of a computer (recording using Audacity). Anyway.. go ahead and discover the enormous amount of fluctuating fields around you … EM field sounds from laptop or see the recording in progress on youtube…

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