FOR KIDS: How to stop a speeding bullet
Scientists take a close look at a plastic that has Superman?s ability to stop a speeding bullet
Web edition: November 26, 2012
Scientists take a close look at a plastic that has Superman?s ability to stop a speeding bullet
By Stephen Ornes
Web edition: November 26, 2012
A new experiment showed how a popular plastic can stop a speeding bullet. The supersmall glass bead in the middle of this image is speeding through plastic at 1,500 meters per second (nearly 1 mile per second). Red areas show where the plastic compresses most on impact.
Credit: Thomas Lab/Rice University
A bullet fired into a disk of polyurethane ? a type of plastic ? may not burst out the other side. In some instances, the bullet will stop in its tracks, frozen by the plastic and sealed inside. How a simple plastic can do this had left researchers scratching their heads. Until now.
Visit the new?Science News for Kids?
Citations
R. Ehrenberg. Plastic fantastic seals in speeding projectiles. Science News Online, October 30, 2012. [Go to]
Source: http://www.sciencenews.org/view/generic/id/346660/title/FOR_KIDS_How_to_stop_a_speeding_bullet
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