ÜDS-Sosyal 2010-1 Soru=58

It is clearly pointed out in the passage that the quality of Stradivarius violins ----.

For the past 300 years, musicians and scientists have
puzzled over the unparalleled quality of classical
Cremonese violins made by the Italian master Antonio
Stradivari. These classical violins have become the
benchmark against which the sound of all other violins
is compared. There are many theories as to the
“secret” of Stradivarius violins. What was obviously first
explored was the exact size of the violins and ratio of
the parts to each other. Although instrument makers
have disassembled their violins, calibrated every
dimension of the pieces to within the hundredth of an
inch, and replicated the measurements perfectly in new
instruments, they have failed to duplicate the
Stradivarius magic. It is also well-known that the
density of the material through which a sound
propagates influences significantly the vibration
efficiency of the material, therefore the tonal qualities of
the instrument. It is also a widely held belief that
Stradivari's well-guarded varnish formula was not just a
protective coating of the instrument, but actually the
most important secret to his violins.