Associated Press... Researchers at Duke University, who developed a material that can "cloak" an item from detection using microwaves, report that they have expanded the number of wavelengths they can block...
The system works like a mirage, where heat causes the bending of light rays and cloaks the road ahead behind an image of the sky.
The researchers report in Thursday's edition of the journal Science that they have developed a series of mathematical commands to guide the development of more types of metamaterials to cloak objects from an increasing rnge of electromagnetic waves.
The new cloak is made up of more than 10,000 individual pieces of fiberglass, arranged in parallel rows. The mathematical formulas are used to determind the shape and placement of each piece...
learn more about it here:
http://www.sciencedaily.com/releases/2008/10/081016141450.htm
and here:
http://www.highbeam.com/doc/1P1-133237344.html
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