14 DAY TRIAL // The word “invisibility” is really being used and abused these days. We've even stumbled upon an instance where it is used in relation to sound waves.
That is to say, an invisibility “cloak” has been created which, rather than mask objects from light and sight, cuts them off from all sound.
Jose Sanchez-Dehesa, an electrical engineer at the Polytechnic Institute of Valencia in Spain, is the inventor.
The device looks like a 3D cage and is made of rings of various sizes which, instead of curving sound waves, cause them to scatter on contact. It isn't different from how noise-canceling headphones do their job.
This is the first time a 3D object has been completely cloaked from sound, and can have great implications moving forward.
Noise pollution could finally be reduced, ships could be made to avoid sonar detection, the uses are many.