New Optical Cloak is so Beautifully Simple You Can Build Them at Home

September 29, 2014 9:11 PM

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New Optical Cloak is so Beautifully Simple You Can Build Them at Home

Scientists have been putting a lot of effort into developing high-tech "cloaks" -- advanced materials that direct lightor sound around an object making it practically invisible. Such studies often have involved quantum effects and/or exotic metamaterials. But according to an exciting new study from the University of Rochester (New York), a far simpler solution might have been right before researchers' eyes.

Physics professor John Howell and his Ph.D student Joseph Choi have put together a work that can best be described as both beautiful and unexpected. They demonstrated that by precisely positioning four lenses -- two of one focal length f1 and two of another focal length f2 -- a "perfect paraxial" c...

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