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Researchers develop portable invisibility cloak
Highlights
A group of German researchers has developed a Harry Potter-type portable invisibility cloak that can effectively shield objects while being small enough to use in classrooms. The cloak works using diffused scattered light and like frosted window panes, it lets light in but hides the source of light.
London: A group of German researchers has developed a Harry Potter-type portable invisibility cloak that can effectively shield objects while being small enough to use in classrooms. The cloak works using diffused scattered light and like frosted window panes, it lets light in but hides the source of light. By scattering light, the material slows down the propagation speed of light waves through the medium.
The light can then be sped up to make up for the longer path length around the hidden object. The cloak cannot hide a human, but it can make small objects disappear from sight. In the cloak, the object to be concealed is placed inside a hollow metal cylinder coated with acrylic paint, Daily Mail reported.
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