posted on Aug, 20 2008 @ 01:51 PM
Originally posted by Copernicus
Electromagnetism dont make any sound....
Not entirely true. The effect of EM resonance on nearby conductive materials is known to create noise. As is arcing, a common result of high powered
Transformers with lose components are known to give off humming noises. It wouldn't surprise me if there's one with a component just lose enough,
and operating at just the right frequency to rattle it at a rate worthy of putting out a high pitched hum.
Ever heard a CRT screen when it ages? Same effect. I have problems watching TV on old sets because of that horrible high pitched squeal, some can hear
it, others don't even notice it. I unfortunately hear it all too clearly, and it's annoying.
My guess therefore, is that it's electrical equipment which needs some maintenance.