[短片] 'Tractor beam' grabs beads with sound waves

本帖最後由 toylet 於 2015-11-1 00:23 編輯

Video in: http://www.bbc.com/news/science-environment-34647921
This video shows how the holograms work, ending with a "cardboard UFO" wrapped around the speaker grid to demonstrate its "tractor beam" function (footage: Asier Marzo/Bruce Drinkwater/Sriram Subramanian)

這個真兮可以叫 tractor beam?

TOP