Originally Posted by: Itsmesillyso I was playing whatever I was playing...and hit a G note on the 5th string 10th fret and heard some noise somewhere other than what I was playing...
I muted each strong speretaely one by one on the dean and found that the G srting was ringing
That is called sympathetic resonance.
http://en.wikipedia.org/wiki/Sympathetic_resonance