The Invisibility Process
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The cloak of invisibility has played an important part in various movies and also in stories until our days. Finding how to become invisible was on the top of the list of most scientists around the world.
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The cloak of invisibility has played an important part in various movies and also in stories until our days. Finding how to become invisible was on the top of the list of most scientists around the world. Several attempts have been made but with no real success. Researchers have as of recently discovered a way of transforming this dream into reality.
Scientists that work at Karlsruhe Institute of Technology have declared that they were able to cloak a tiny bump in a layer of gold. Using this discovery its detection at nearly visible infrared frequencies was prevented. This cloaking device also works in three dimensions. The lead researcher, Tolga Ergin said that the previous created cloaks only worked in two dimensions.
This cloak is actually a structure of crystals that has air spaces in between, like a woodpile for example, that can bend light and in our case hide the bump in the gold layer.
The bump was extremely tiny in this case. It was a mere 0.00004 inches high and had 0.00005 inches across. In order to see it, a magnifying glass was needed. The researchers said that the cloak is completely scalable and that it had no limit. The only problem is that it would take a long time to hide something using a cloak, so using this procedure for larger items is not at all feasible.
Earlier studies lead by researchers at Duke University discovered a way of cloaking objects in two dimensions from microwaves. Microwaves bounce off the objects, making them invisible and creating a shadow that can be detected, exactly like radar waves and light. The research team from Germany used infrared waves. These infrared waves are much closer to the spectrum of visible light. Special materials deflect radar light or other waves around an object like water flowing around a smooth rock in a stream.
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