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Silly Putty

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Silly Putty® is a plastic "clay", marketed as a toy for children by Binney & Smith Inc. It is another one of those scientific "oops" on the way to solving another problem. It has been around since at least the 1950s, and is still loved by children today.

Silly Putty comes as a glob of what seems like a very plastic clay of unusual characteristics, inside of a roughly egg-shaped plastic case. When pressed on comics pages or other newspaper media, the loose ink transfers to the Silly Putty, which is then able to be stretched out, a source of amusement for many children. It is also bouncy, being a form of rubber. It breaks when given a sharp blow. When it gets too warm, it melts and becomes very sticky. Silly Putty comes in various colors, including glow-in-the-dark and metallic, and colors can be easily combined to make new shades of bounciness. Two combined colors of Silly Putty can still fit into one case, since the case is usually filled about half-full when purchased.

Silly Putty was accidentally invented by James Wright of General Electric when he dropped boric acid into silicone oil. He was looking for a substitute for artificial rubber. GE supplied the compound to researchers around the world. None found a use for it, but they all loved playing with it. It was commercialized by Peter Hodgson in 1949 after the marketing expert attended an informal "nutty putty" party.

Raw Silly Putty is available as Dow Corning (http://www.dowcorning.com/) 3179 Dilatant Compound.

According to an MIT web page on inventions:

"Ironically, it was only after its success as a toy that practical uses were found for Silly Putty. It picks up dirt, lint and pet hair, and can stabilize wobbly furniture; but it has also been used in stress-reduction and physical therapy, and in medical and scientific simulations. The crew of Apollo 8 even used it to secure tools in zero-gravity."

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