Holographic screens are supposedly the predicted future of screens.
Supposedly levitating and is ethereal – it necessarily cant be touched since it would images produced by light, suspended mid air.
The mirascope, uses 2 concave mirrors to reflect the image in a way that it appears to be tangible but is not, pretty cool. (This links to a video on how it works, warning: math – https://www.youtube.com/watch?v=33IvhNsiPb4)
That being said,It may be a possible way to make holograms happen.
while there are other better existing holographic illusions that have been done (the deceased Tupac shakur’s concert appearance, Japan’s Live Vocaloid concert) I think there could be other ways to produce holograms.
just my thoughts and what not, hope you enjoyed the short read.
Engines of Commerce 
Shared your post! This gives me an idea on how to illustrate the Black Hole https://www.facebook.com/teacher.romcumagun/posts/628967220535356
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