The history and characteristic of tennis ball

 Hello everyone! Today, I will write about history of tennis ball. In addition, I describe the difference with a ball used for other competitions.

 

 As a premise, the tennis ball greatly separates two kinds. It is a rigid ball and a rubber-ball. I write it as these two histories and characteristics each.

 

At first I will write it about a rigid ball. It was from the 18^th century that tennis came to be carried out in form like the present by a former article, and the previous tennis ball seemed to be the ball which I filled with things such as the animal hair and sawdust in cloth and skin. This is said to be the forerunner of the rigid ball. As for the current rigid ball, the surface is felt and rubber and air is in the covered inside. It is said that the ball made of the rubber like the present came to be made in the 1870s. It became the ball which it was easy to control by making it with rubber and felt. Furthermore, people changed the seam which was outside sewing into inner sewing and became the ball which took a bad hop, and was hard to bounce. It is the rigid ball with such a characteristic, but, in fact, it is divided into two kinds of a game ball and the practice ball by a difference of the pressure of air included inside. The game ball called pressure ball. This is double the pressure in the ball approximately two of the atmospheric pressure and raises the repulsion of the ball. The practice ball called Non-pressure ball. The internal pressure is the same as atmospheric pressure, but bound as same as a pressure ball because it is only slightly thick. Some feeling of batted ball is heavy, but there is an advantage to be usable without repulsions changing even if they leave you unattended for a long term.

 

Next, I write it about a rubber –ball. There is the rubber-ball is made from rubber with a ball used in soft tennis. And air enters inside. It is defined that a color is white or yellow, as for the diameter, 6.6centimeters, weight are 30 grams-31 grams. In the coat, the bottom end of the ball drops it from an altitude of 1.5 meters, and it is decided that 70-80 centimeters bounce. It is told that the rubber-ball Japan. It is said to be origin people make a ball with rubber in substitution for high-quality felt in those days, and to have played tennis in the late 1800s when tennis was handed down to Japan. A person called Gendo Tsuboi gets a idea from a rubber ball that Japanese traditional toy and makes it, and it is informed that I came to be able to play tennis willingly in Japan.

↑pressure ball

↑rubber-ball

 

Might you feel such history and characteristic on the ball which one of the tools of the tennis was?

Next articles, I will write about tennis gut. See you again!