posted on Feb, 19 2009 @ 11:09 PM
I was thinking about "feedback" from a microphone. "Feedback" is when you use a microphone to close to a speaker that is playing the sounds from
the microphone. What happens is, sound from the speaker vibrates the microphone, and that sends a signal back to the speaker and an infinite loops
happens. Microphone, to speaker, to air, to microphone, to speaker, to air, etc.. That's when you hear a high frequency ringing sound.
A speaker is basically a horrible microphone, it too has a magnet and a coil, and if you vibrate the speaker cone, it will create electricity, just
like a microphone..
So wouldn't a "feedback loop" be perpetual motion??
If you start a sound into the microphone, it will vibrate the speaker, and the speaker will vibrate the air, and the air would vibrate the microphone
again, and the loop continues...
Perpetual vibrational motion?
[edit on 19-2-2009 by ALLis0NE]