Tractor beams make the leap from sci-fi to real life

What can you do with loudspeakers? Blast your favorite song? Turn science fiction into reality? Scientists are now able to use loudspeakers to create tractor beams, levitating and rotating objects by using just one block of speakers on one side of the object.

According to Hanae Armitage from the American Association for the Advancement of Science, "Scientists have used sound to levitate objects before. That feat isn't surprising, as sound is a wave of pressure strong enough to move your eardrum. However, instead of audible sound, sonic levitation utilizes higher ultrasonic frequencies that are beyond the range of human hearing. When blared from loudspeakers in the right configuration, these sound waves can combine to form a sonic scaffolding called an interference pattern—a sort of a force field that can hold a small object aloft."

To see this amazing technology in action, watch the video below.

Learn more about the sonic tractor beam