I've watched the video and listened to it, I'm just not impressed by the final effect. I choose the second method by comparison.
I mentioned liquids mainly because this effect is easier to achieve in them. Air is still rather "blerght" as we can see in the forementioned video.
The idea is to immitate a 3D object, and in that department, the latter "projector" simply "looks better".
Why so serious Spinal, why so serious?
as the video say it will get better people geez watch the damn video
It's like you're not even reading.
There are far more impressive holograms out there, I see no reason to be excited by a green laser one. In fact, I posted a hologram that I find more amusing and impressive. Rather than engaging in a meaningful conversation and actually talk on-topic you prefere to lecture me saying "boo-hoo, you didn't watch the video and I diiiid!". Well, congratulations, now seeing that you have nothing else to say, leave in shame.
If I am to choose between a monochromatic hologram that flickers at 15 FPS, burns my eyes and only shows very limited shapes and a hologram that shows fully textured high-quality colour 3D models BUT has to be a glass jar, then mind you, I want an awesome glass jar rather than a crappy green flashlight. I'll be excited when they have an awesome flashlight, but for now I want my jar. Is that so hard to understand?