According to ScienceNews, a bunch of researchers who have been able to Princess Leia hologram scene.
This system works by trapping a cellulose particle that’s mere micrometers across in a beam of nearly invisible laser light. That laser repeatedly moves the particle along a specific path through the air, for example, in the shape of a corkscrew or the outline of a butterfly. At each point on the particle’s path, other lasers illuminate it with red, green or blue light, which the particle scatters in all directions. This creates a single image pixel that can be viewed from all sides.
Because the particle whizzes through the air so quickly and loops through the same path over and over again, all these pixels blur together — like the tip of a sparkler waved so fast that it seemingly smears into a solid line. This creates what appears to be a still image floating in the air.
|In Layman's Terms: Gravitational Waves|
|I Don't Wanna Panic Anyone, But Our Universe Isn't The First|
|Mystery of the Missing Sunspots, Solved?|
|Evolution Has Made the Brain Register Rejection as Actual Physical Pain|
|"Creating an HIV vaccine is like trying to fire a gun at millions of shielded, moving targets that can eat your bullets." Why We Have No Cure for AIDS|
|Everything We've Learnt About the Surveillance State|
|How to Avoid Jury Duty|
|Go the Fuck to Sleep: A Children's Bedtime Book|
|“He portrays these abandoned malls as apocalyptic ruins.”|
|“The cost could be so near to zero it will effectively be free.”|
|Japanese Robot Serves Ice Cream From Inside a Vending Machine|
|“Put words between buns.”|
|“Rejuvenation is Finally an Industry.”|
|Google Map Shows You the Most Photographed Areas of the World|
|Sensually Retro Illustrations by Simone Massoni|
|Cure for Gayness? There's an App for That|
|Good Fucking Design Advice|