Sci-fi sound wave device makes Star Trek style tractor beams out of powerful mini-tornadoes that can manipulate large objects

Sci-fi sound wave device makes Star Trek style tractor beams out of powerful mini-tornadoes that can manipulate large objects
(Natural News) It seems like every day you see, hear, or read about something that’s being created or invented concerning all sorts of popular science fiction technology, but a fully-working tractor beam was never among them — until now. According to a team of engineers from the University of Bristol, they have successfully managed to…
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