One step closer to Star Trek
While not a conventional “tractor beam”, scientists have created an array that enables “Three-Dimensional Mid-Air Acoustic Manipulation”. In other words, it uses sound to move small objects around in the air. It looks like we’re making good progress to have tractor beams in use by the year 2159 (when they’re widely used in the Star Trek universe). Oh, did I mention I’m a Star Trek nerd? Well now you know a bit more about us.