World’s first ultrasonic tractor beam can lift and transport objects

tractor-beams

Holograms are images that seem to jump out of a flat surface, full of depth that you can experience through perspective changes and parallax cues. The three-dimensional effect that a hologram creates comes from the three dimensional light field that’s created when photons diffract through the interference pattern on a holographic plate. It’s essentially a structure made of light that gets projected out into space when the seemingly random pattern of features on the plate interact with each other.

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