Jim, >Del; > Didn't someone, or several someones, do some experimentation using a priciple >something similar?? It seems to me that the thrust of this experimentation >was to place iron shavings on the soundboard , excite the board with some such >device and see the vibratory patterns, etc., that developed, or am I just >having hot flashes? >Jim Bryant (FL) We must be having the same hot flashes - I recall a video/demonstration way back at Philly '80 by Kimball (i think) which used sawdust or sand to show the node pattern of a soundboard driven at different frequencies. Conrad Conrad Hoffsommer Office - (319) 387-1204 Luther College Music Dept Fax - (319) 387-1076 700 College Drive hoffsoco@luther.edu Decorah, Iowa 52101-1045 Phillip's Law: Four-wheel-drive just means getting stuck in more inaccessible places.
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