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         Chladni Patterns

Mandolin #138:  Top is Swiss Spruce and the back is NG Rosewood.

 

 

 

Top braced, mode 1, 175Hz

 

   Top braced, mode 2, 263Hz

 

 

Top braced, mode 3, 316Hz

 

 

Top braced, mode 4, 417Hz

 

 

Back mode1, 172Hz

 

 

Back mode2, 178Hz

 

 

Back mode 3, 301Hz

 

 

Back mode 4, 418Hz

 

 

Top with the ribs glued, 623Hz