Tech enthusiast makes futuristic levitation device and 'tractor beam'

An inventor from California has created a cool mini-levitation device that also works like a "tractor beam." The futuristic machine uses very loud, high-frequency sound waves to suspend a particle in the air. The pitch is so high that it's inaudible to humans. "I can control any particle to go up or down using the button pad, by adjusting the phase," said the creator, who only wants to be referred to as @WeMakeProjects.