A standard NBA basketball is 9.43 to 9.51 inches in diameter, or 29 5/8 to 29 7/8 inches in circumference. It is inflated to a pressure of 7.5 to 8.5 pounds.Know More
Other leagues have slightly different requirements for their basketballs. The diameter of a regulation WNBA basketball is 9.07 to 9.23 inches. The diameter of a FIBA basketball is 9.78 inches. NCAA basketballs must be 9.39 to 9.55 inches for men or 9.07 to 9.23 inches for women. The typical diameter of a grade-school basketball is 8.67 to 8.83 inches.
Basketballs are produced in smaller sizes for various other applications, such as children's playthings or promotional giveaways.Learn more in Basketball
One slang term for basketball is "rock." Sentences including the term are "go ahead and shoot the rock," and "pass the rock to me." To "protect the rock" entails being careful when dribbling or otherwise handling the basketball, so the other team does not steal it.Full Answer >
NBA balls are made of a leather exterior housing a butyl rubber bladder, which holds the air and creates enough pressure to properly bounce the basketball, and a carcass made of nylon and polyester. There are not any official specifications as to what basketballs should be made of.Full Answer >
More air inside a basketball will make it bounce higher. The additional air hardens the leather or composite shell of the ball, making it more buoyant.Full Answer >
Basketball originated in Springfield, Mass., on Jan. 20, 1892 and was developed by Dr. James Naismith. It began as a simple game involving a ball and a peach basket that could be played during the winter.Full Answer >