A few years ago invisibility cloaks were just confined to fiction. Now, it is a reality with research going on in a number of countries. But most of the experiments are being done for making something invisible. But the scientists from Germany’s Karlsruhe Institute of Technology decided to do something different, create an invisibility cloak for sound.
Have you ever driven down a long highway on a hot day and seen something disappear in the distance only as you get closer? Well, it was likely a mirage, and those tricky instances have tempted and tortured more than one lone wanderer in the desert.