Tuesday 16 April 2013

FOR KIDS: Sound cloak

New device hides objects from sonar

By Stephen Ornes

Web edition: April 15, 2013

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This strange-looking cage can hide an object inside it from being detected by sound waves.

Credit: L. Sanchis et al

It would be easy to mistake engineer Jos? S?nchez-Dehesa?s latest creation for a trinket. The plastic gizmo is a mere 17 centimeters (6.7 inches) long and looks like a cross between a birdcage and an ostrich egg. But appearances can be deceiving. This little device achieves something never done before: It hides a solid object from sound waves. Essentially, it?s a cloaking device.

Visit the new?Science News for Kids?website?and read the full story:?Sound cloak

Source: http://www.sciencenews.org/view/generic/id/349673/title/FOR_KIDS_Sound_cloak

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