Bouncy ball

Rubber balls is the name for all the balls that were formerly made ​​of rubber and are now mostly made ​​of plastic material.

Term

A special rubber ball from a solid medium rubber compound is called in the parlance also bouncing ball, super ball, ball or cross Dopsball. Due to this mixing ratio, these balls have a low elasticity, but a high bounce, similar to the balls in basketball. Enter their kinetic energy only slightly at the impact surface from and thereby maintain the speed-strength.

The term " Bouncing Ball " is a portmanteau word and goes back to a Walt Disney movie called "The Flying Pathfinder " ( The Absent Minded Professor, 1961). It invented a played by Fred MacMurray professor a " miraculous " rubber compound that can do amazing things. This invention he called " Flubber ", a contraction of the English "flying rubber" as a term for the small 2 to 6 cm in diameter possessing balls. In the German synchronization film has now been translated correctly from this "flying rubber" "flying rubber " contracted to " Bouncing Ball ". Later in the movie remake, however, this neologism was integrated already too much in common parlance, to deliver a crowd-pulling movie title, which is why the film " Flubber " remained untranslated in the synchronization.

Application

From kids rubber balls are mostly used for throwing against fixed resistors. It is interesting constellations of bounce arise as a result of elasticity and change of the angular momentum in every contact. Furthermore find larger rubber balls (diameter about 7 cm) used in juggling above the ground.

Others

Sony did in 2005 250.000 bouncy balls bouncing down the streets of San Francisco to promote the video for "Sony Bravia " TV.