The computer calculated iso line layout

for an arch shape with equal width for

"upper" and "lower" parts

 

This figure has no real violin isoline layout.

It's only shown to illustrate the "element" congruence more obvious.

 

 

 

The figure shows the iso line layout for a computer calculated arch shape with equal width for "upper and "lower" part.

There is complete congruence of shape in each quarter (90 dgre sectors). The layout is completed with "elements" (straight lines) marking the place of 3 different cross sections in each quarter, which are equal in shape (congruent).

 

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Explanatory text about 3D congrence and element-lines

Calculated 3D iso line by the author

Stradivarius iso lines measured by Möckel

Guarneri del Gesu iso lines measured by Möckel

Sacconi "belly" iso lines

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Sacconi "back" iso lines

 

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