- Violin: a bowed stringed instrument having four strings tuned
at intervals of a fifth and a usual range from G below middle C
upwards for more than 41/2 octaves and distinguished from the
violin in having
a shallower body, shoulders at right angles to the neck, a fingerboard
without frets, and a more curved bridge.
- The front and back of a violin are not flat. The question
is: What shape do they have?
- The shape of a cross section of either side has the same
curve as a crossbow.
- This curv is a trachoid and is given by the following
- ``Rolling circle''
- Drawing these curves by hand is tedious.
- It is easy to write software to plot trachoids, and if we
do a descent job and have a reasonable printer, the
violin maker can use computer plots rather than draw
these curves by hand.