Super Ball

It is an extremely elastic ball made of Zectron,[1] which contains the synthetic polymer polybutadiene as well as hydrated silica, zinc oxide, stearic acid, and other ingredients.

[12] By December 1965, over six million had been sold, and U.S. presidential adviser McGeorge Bundy had five dozen shipped to the White House for the amusement of the staff.

[8][9] It fell from the 23rd story window (some reports say the roof) of an Australian hotel and destroyed a parked convertible car on the second bounce.

[8][9] Composer Alcides Lanza purchased several Super Balls in 1965 as toys for his son, but soon he started experimenting with the sounds that they made when rubbed along the strings of a piano.

[16] This resulted in his composition Plectros III (1971), in which he specifies that the performer should use a pair of Super Balls on sticks as mallets with which to strike and rub the strings and case of a piano.

He wrote a letter to National Football League (NFL) commissioner Pete Rozelle dated July 25, 1966: "I have kiddingly called it the 'Super Bowl,' which obviously can be improved upon."

[21] High school physics teachers use Super Balls to educate students on usual and unusual models of impacts.