We recently completed ordering the parts for our contribution to the Great Global Hackerspace Challenge, and we are revealing what it will be.  It is a holographic display like no other.  This display can be used in the classroom to display 3D images such as a globe, a teacher in a remote location, or to check out your 3d part from all sides before printing.  There is a sketch below of how it is constructed and a link to a test video.  This invention is licensed under the Open Source Hardware Definition.  Or whichever license at the time of release makes the most sense of further innovation of it.  
Here is the video with some preliminary tests: it is very out of sync and loud, ok to mute it.
Psytek is an inventor and engineer. He collaborates with other members of Alpha One Labs on unique projects including a 
