A badminton racket is a racket used to play the sport of badminton. Although traditionally made of wood, modern rackets are often made of aluminum or composite materials. The shape of a badminton racket is typically oval, with a stringed area in the middle and an open-ended frame on either side. The strings are usually made of synthetic materials such as nylon or Kevlar. Badminton rackets typically weigh between 80 and 100 grams, with the balance point located near the racket’s top. In terms of size, badminton rackets generally are between 70 and 73 centimeters in length and have a head diameter of approximately 30 centimeters. The sweet spot, or area of the racket where shots are most effective, is located in the center of the strings. Badminton is a racquet sport played using racquets to hit a shuttlecock across a net. Although it may be played with larger teams, the most common form of the game is singles (with one player per side) and doubles (with two players per side). Badminton is often played as a casual outdoor activity in parks and gardens. A competitive form of the game developed in England in the 19th century and has since been played at various international tournaments. The game is also governed by the Badminton World Federation (BWF). Points are scored by striking the shuttlecock with the racket and landing it within the opposing side’s half of the court. Each side may only strike the shuttlecock once before it passes over the net into the other side’s court. A rally ends once the shuttlecock has struck the floor or if a fault has been called by one of the umpires, service judges, or (in their absence) line judges.