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August 12, 2008 | Comments 0 | Blog

Invisibility cloak

I just read an interesting story on CNet News about the further development of materials that could make people or things invisible. 

Ok, what people see are not the actual objects or people, but the light being absorbed of reflected off those things.  So we see light.  The University of California, Berkley with U.S. Army Research Office and National Science Foundation’s Nano-Scale Science and Engineering Center funding (now that was a mouthful) is developing material with “negative refractive” properties which would keep light from being reflected or absorbed by the object and allows only the light from behind the object to be seen.  What they have done is redirected light around an object using artificially engineered nano structures with optical properties not found in nature.  The material bends visible light so that is eliminates the creation of reflections or shadows like water flowing around a stone.

I do have a thought or a question, if you are invisible this way and light is no longer being reflected or absorbed by you, can you still see?  Just a thought.

Invisibility cloak on the horizon, scientists say | News - Cutting Edge - CNET News.

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