Why do they have those white curved lines? The white curved lines do not pertain to gameplay but are very important for manufacturing purposes. These are the seams where the fuzzy covering attaches to the ball’s surface. The sections of fabric are produced to be placed on the ball at the perfect angle.
Moreover, what are the layers of a tennis ball?
A tennis ball basically has two components, a ball core and a felt layer. The ball core consists of two hemispheres which are glued together. It is hollow inside and consists of a rubber-like mixture of different materials.
Beside above, what does fault mean in tennis?
Why are tennis balls green?
So the International Tennis Federation (ITF) undertook a study that found that yellow tennis balls were easier for home viewers to see on their screens. An official 1972 ITF rule change required that all regulation balls have a uniform surface and be white or yellow in color.
Tennis players may check three balls or more before serving so that they can select one smooth ball and one fluffy ball. The smooth ball is used for the first serve. Because the hairs are flattened down, the ball travels faster than an older ball, which should make it harder to return.
The only equipment you need to play a tennis match is a tennis racket, tennis shoes, a tennis ball, and a tennis court with a regulation net. Your racket head and grip should be the right size and weight for your skill level so you can wield it easily.
The International Tennis Federation (ITF) oversees the official ball, but the accepted range of size and weight allow for variances from ball to ball. Tennis balls must measure from 2.57 to 2.70 inches in diameter and weigh between 1.975 and 2.095 ounces, leaving a bit of wiggle room for differences.
The average drag coefficient varies between 0.55 and 0.65 for new tennis balls in the Reynolds number range of 69 000<Re<161 000 (60–140 km/h).