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2. Strings (tennis) - Wikipedia

   en.wikipedia.org/wiki/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 ...

3. Tennis racket theorem - Wikipedia

   en.wikipedia.org/wiki/Tennis_racket_theorem

   The tennis racket theorem or intermediate axis theorem, is a kinetic phenomenon of classical mechanics which describes the movement of a rigid body with three distinct principal moments of inertia. It has also dubbed the Dzhanibekov effect , after Soviet cosmonaut Vladimir Dzhanibekov , who noticed one of the theorem's logical consequences ...

4. Tennis technology - Wikipedia

   en.wikipedia.org/wiki/Tennis_technology

   As materials improved, becoming lighter and stronger, rackets were made larger, accordingly. Larger rackets have more surface area, making them easier for many players to return a ball. Sizes are: Mid: 93 square inches (600 cm 2) and below. Mid-plus: 94–105 square inches (610–680 cm 2) Oversized: 106–122 square inches (680–790 cm 2)

5. Spaghetti racquet - Wikipedia

   en.wikipedia.org/wiki/Spaghetti_racquet

   Spaghetti racquet. Werner Fischer's 1977 U.S. patent application for the spaghetti racquet. The "spaghetti" racquet was a type of double-strung tennis racquet that had a brief spike in popularity in the fall of 1977, revolutionizing the sport for about a month before being banned at the top levels of play. It applied far more spin to a tennis ...

6. Stringing machine - Wikipedia

   en.wikipedia.org/wiki/Stringing_machine

   A Tecnifibre electronic stringing machine. Electronic stringing machines control the tension with a computer-directed electric motor, resulting in fast paced stringing and exceptional accuracy. This is the most common kind of stringing machine found in racquet sport shops. Reliable constant pull stringing machines usually cost $3,000 and more.

7. Glossary of tennis terms - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_tennis_terms

   Tape it: To play a shot that hits the tape at the top of the net. Tennis ball: Soft, hollow, air-filled rubber ball coated in a synthetic fur, used in the game of tennis. The ITF specifies that a tennis ball must have a diameter of 6.54–6.86 cm (2.57–2.70 in) and a weight of 56.0–59.4g.