Saturday, August 8, 2009

The latest advance


Marine Life Image Gallery

Researches are applying lobster vision to new X-ray technology.
Peter Dazeley/Riser/Getty Images
Researches are applying lobster vision to new X-ray technology. See more pictures of marine life.

The latest advance in the war against hidden bombs, lurkingcockroaches and illegal immigr ants comes straight from the floor of the ocean. Lobsters possess one of the most unique vision systems in the animal world, and researchers are working on adapting that system toX-ray scanners that will make steel walls about as opaque as tissue paper.

X-rays are a form of electromagnetic energy. The spectrum of electromagnetic energy also includes radio waves and visiblelight. Some materials absorb X-rays, others reflect them and others let them pass through, refracting the beams so that they bend. Refracted X-rays exit the material at a different angle than the one at which they hit.

A typical X-ray system uses an X-ray generator, which produces a beam of X-rays, and a detection medium (an optic system). To make an image, X-rays are fired at an object. Some of the X-rays pass through the object and are refracted. Other X-ra ys are absorbed completely, and some are reflected. The detection medium "sees" the X-rays that pass through the object.

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