Strings (tennis)
In tennis, the strings are the part of a tennis racquet which make contact with the ball. The strings form a woven network inside the head (or "hoop") of the racquet. Strings have been made with a variety of materials and possess varying properties that have been measured, such as dynamic stiffness, tension retention, thickness (gauge), string texture (shape of the string), and rebound efficiency.
Basic physics of the violin
String tension affects the sound a violin produces in an obvious way. Increasing the tension on a string results in a higher frequency note. The strings of a violin are wrapped around adjustable tuning pegs. By turning its associated peg, each string may be loosened or tightened until it produces the desired pitch, which may be described in terms of frequency. The playing tension of a violin string ranges from about to .