acoustic invisibility
February 17, 2008Scientists discovered fairly recently that materials can be made that force light beams go around an object, thereby rendering the object invisible. In the next logical move, a team of researchers has found that such an ‘invisibility cloak’ can be applied to sound. The project of bending soundwaves is proceeding at the Polytechnic University in Spain.
I could have used such a cloak in the last few weeks when a family member developed the high-decibel cough of a current bug making the rounds. My headphones are not the noise-cancelling kind, and even when I went outside to the front yard, the cough could still be heard. Now I’ve learned that this could go on for a full six weeks.
Surely, almost everyone could use the technology at some point in their lives.
