Search results
Results from the WOW.Com Content Network
The bounce of an oval-shaped ball (such as those used in gridiron football or rugby football) is in general much less predictable than the bounce of a spherical ball. Depending on the ball's alignment at impact, the normal force can act ahead or behind the centre of mass of the ball, and friction from the ground will depend on the alignment of ...
A superball or power ball is a bouncy ball composed of a type of synthetic rubber (originally a hard elastomer polybutadiene alloy named Zectron) invented in 1964, which has a higher coefficient of restitution (0.92) than older balls such as the Spaldeen so that when dropped from a moderate height onto a level hard surface, it will bounce nearly all the way back up.
A Super Ball or Superball is a toy bouncy ball based on a type of synthetic rubber invented in 1964 by chemist Norman Stingley. 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. [ 2 ]
Slow motion video of Skyball bounce. Audio of two Skyballs bouncing around. The Sky Ball is a mid-sized bouncy ball toy sold by Maui Toys. [1] [2] Each ball measures 4 inches (10 cm) in diameter [3] and contains a mix of helium [4] [5] and compressed air. It has received critical acclaim for its high restitution, or bounciness. [1]
Modern-day Spaldeen. A Spalding Hi-Bounce Ball, often called a Spaldeen or a Pensie Pinkie, is a rubber ball, described as a tennis ball core without the felt. [1] These balls are commonly used in street games developed in the mid-20th century, such as Chinese handball (a variation on American handball), Australian Handball, stoop ball, hit-the-penny (involving trying to make a penny flip on a ...
The bouncing ball is a virtual device used in motion picture films and video recordings to visually indicate the rhythm of a song, helping audiences to sing along with live or prerecorded music. As the song's lyrics are displayed on the screen in a lower third of projected or character-generated text, an animated ball bounces across the top of ...
The ball is made of different types of polyurethane covered in Lycra, allowing it to bounce on water and float. [2] To bounce the ball on the water, one must throw like skipping a rock. The ball bounces high on the water in between players when thrown at the right angle (overhand) with the right force. The ball does not bounce on land. [2]
The space hopper is a heavy rubber ball about 60–70 centimetres (24–28 in) in diameter, with two rubber handles protruding from the top. A valve at the top allows the ball to be inflated by a bicycle pump or car tire pump. A child can sit on top, holding the two handles, and bounce up and down until the ball leaves the ground.