Sound Waves Can Make Things Invisible!

Okay, so maybe not invisible, but transparent is pretty darn close. And maybe only plastic. But we’re closer than we were before—for this post’s purposes, at least! Need a scientific explanation for cloaking? Look no further, I gotchu. 😉

Researchers have found a way to make materials that are normally opaque to sound waves completely transparent. Their system involves placing acoustic relays at strategic locations so that sound waves can propagate at a constant amplitude — regardless of what may lie in their path. This method could eventually be used to make it possible to hide objects like submarines.

Source: Sound-waves: Making opaque materials totally transparent — ScienceDaily