It seems that the old adage ”I’ll believe it when I see it with my own two eyes” is not as reliable as it used to be. A significant amount of research is being conducted into cloaking devices, which will allow objects to become “invisible” at certain frequencies.
Research shows that this can be achieved, at certain frequencies, by guiding the waves around the object and once past, allowing them to resume their original path. This is possible using a new material known as a metamaterial, which can steer light in a predetermined way. Various teams around the world have built invisibility cloaks which hide objects from view in both the microwave and optical bands.


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