DEFENSEWATCH: SillyPutty Armor - Promises to Save Soldiers

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Sunday, July 16, 2006

SillyPutty Armor - Promises to Save Soldiers

How do you get ketchup out of a bottle? Most people turn the bottle upside down and slap the bottom. Smarter people quickly move the inverted bottle towards their plate, and stop it suddenly against the thumb and forefinger of their other hand. In effect, when the bottle stops, the ketchup keeps moving. This happens because ketchup is a shear thinning fluid: When subjected to a shock it becomes suddenly much less viscous – it gets thinner. Remember SillyPutty? You can mould it and shape it all... Sign in to see full entry.

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