The research could have applications in computing and signal processing
'Space-time cloak' to conceal events revealed in new study. Cloak allows objects to move undetected, according to a paper in the Journal of Optics - News release Scientists have developed a recipe for manipulating the speed of light as it passes over an object, making it theoretically possible to 'cloak' the object's movement so that an observer doesn't notice, according to a paper in the Journal of Optics . The study, by researchers from Imperial College London, involves a new class of materials called metamaterials, which can be artificially engineered to distort light or sound waves. With conventional materials, light typically travels along a straight line, but with metamaterials, scientists can exploit a wealth of additional flexibility to create undetectable blind spots. By deflecting certain parts of the electromagnetic spectrum, an image can be altered or made to look like it has disappeared. Previously, a team led by Professor Sir John Pendry at Imperial College London showed that metamaterials could be used to make an optical invisibility cloak. Now, a team led by Professor Martin McCall has mathematically extended the idea of a cloak that conceals objects to one that conceals events .
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