Violin

The violin is a stringed musical instrument comprising four strings tuned a fifth apart. It is the smallest and highesttuned member of the violin family of string instruments, which also includes the viola, cello and double bass. The lowest string (and hence the lowest note) is the G just below middle C, then in ascending order D, A and E.
The violin is a carefully made hollow wooden box, with a neck protruding from the top, and a internal sound post connecting the front (belly) and the back. The sides of the violin, curiously, are called ribs. The belly is reinforced by an internal bass bar, which runs vertically through the instrument underneath the lowest string.
The four violin strings run from a tailpiece attached to the base of the violin, across an intricately carved wooden bridge, then upward just above the fingerboard. At the top end of the fingerboard, the strings cross the nut, a very small second bridge, mounted just slightly above the fingerboard. They then enter the pegbox, where they are wound around their tuning pegs, which are mounted sideways through tightly fitting holes in the pegbox. The tip of the pegbox is ornamented with a carved wooden scroll.
The bridge of a violin has two purposes. First, it holds the strings in an arched configuration, permitting each to be touched separately by the bow. The bridge also transmits the sound vibrations of the strings to the belly, from which they are transmitted to the back by the sound post.