A series of acoustic sensors that turn any surface into a touch-sensitive computer interface have been developed by European researchers.
http://www.youtube.com/watch?v=UdetI7glJP4
And in other news, scientists have now levitated small live animals using sounds.
http://www.youtube.com/watch?v=UdetI7glJP4
And in other news, scientists have now levitated small live animals using sounds.
幻術