> Wait Ron don't give up so fast doesn't a string move up/down....side to side >and expand/contract? Don't I count three here? Besides the pond example is >not "three" >dimensional" it is uni-dimensional,i.e. Radiates in 'all' directions >equally...just because we don't 'normally see the waves under water doesn't >mean they are not there................... I'm not giving up anything Jim, because that isn't the point. However many directions a string goes when it vibrates, it either moves the bridge in the process or it doesn't. I say it does. The other 70,000 words and side trails are incidental to that question, which is why I keep trying to drag it back to this fundamental concept. Ron N
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