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WhatYouTalkin’Bout, Harry Potter? Invisibility is Science not Magic

A multidirectional `perfect paraxial' cloak using 4 lenses. For a continuous range of viewing angles, the hand remains cloaked, and the grids seen through the device match the background on the wall (about 2 m away), in color, spacing, shifts, and magnification. The edges of the optics can be seen since this is a small-angle ('paraxial') cloak, but this can be reduced by using large optics and for distant viewing; also the center of the device must not be blocked. // an optical cloaking configuration designed by University of Rochester professor of physics John C. Howell and Ph.D. student Joseph Choi is pictured in Bausch & Lomb Hall September 11, 2014. // photo by J. Adam Fenster / University of Rochester

photo by J. Adam Fenster / University of Rochester

SciTechDaily.com reports that University of Rochester researchers have improved the ability to cloak, in theory, objects of any fixed size, even if it is moving, if “the shape of the object remains fixed and does not deform.”

Using a mix of cameras and pixels with tiny lenses over them to “show the background as if an object wasn’t there.”

Watch The Rochester Digital Cloak: A New Age of Invisibility.

Tags: optics, cloaking, physics, magic

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