Researchers at University College London have demonstrated a technique for levitating small objects using sound waves in the presence of an interference object.
Waves fired upward can lift objects but also be easily nullified by anything which comes between it and the target.
With the world coming fresh out of a major pandemic during which many people worked from home for the first time and in jobs where that would normally not be an option, Cisco is launching new holo-meeting technology.
It's no holodeck but looks like an interesting step in that direction.
