Another method is to use a high-powered pulsed laser to create little balls of plasma in mid-air: <a href="https://www.popsci.com/secret-interactive-holograms-plasma-and-femtosecond-laser" rel="nofollow">https://www.popsci.com/secret-interactive-holograms-plasma-a...</a>
I feel like I've seen reports of research demonstration with near future commercial possibility in this field every couple years since sometime in the mid-1990s.
This is really clever, from a design perspective. I mean, projecting onto a moving particle is a really innovative idea. But scientifically, what I find the most surprising, is that a laser trap can move a particle around at sufficient speeds, outside a vacuum, without losing it. Impressive! I had no idea that was possible. Anyone know what speed or frequency of movement it can achieve?
For now, they created a single pixel by trapping one particle (not sure what it's made of) and beaming different colors on it.<p>Depending on when they managed to trap two particles, we can start applying Moore's law and double it every so often.
> Humans cannot discern images at rates faster than 10 per second<p>If the PCMR folks already hate everyone saying the human eye sees at 25FPS, imagine how they'd react to that!
I find it interesting that people with such a large variety of world views (Mormons, Christians, Muslims, Buddhists, atheists, etc.) can all produce groundbreaking advances in science, math, and engineering.<p>Pick any two of those aforementioned groups, and you'll find plenty of members from one who consider the other's members to have unfathomably bad reasoning and common-sense skills. And yet, somehow, some members of all those groups bear wonderful intellectual fruit.
HN title: "Holograms are here"<p>Actual title: "Better than a hologram: BYU study produces 3D images that float in 'thin air'"<p>Article text: "First things, first, Smalley says. The image of Princess Leia is not what people think it is: It’s not a hologram."<p>Can we not editorialize and/or get the titles completely wrong?
<a href="https://news.ycombinator.com/item?id=16225854" rel="nofollow">https://news.ycombinator.com/item?id=16225854</a><p>47+ points<p>Actual title of <i>this</i> submit was "Better than a hologram: BYU study produces 3D images that float in 'thin air'"
Great <i>another</i> medium from which failed reality stars can convince an increasingly stupid public to vote for.<p>Edit: This is funny, no one was a sense of humor. Just imagine Donald Trump's holographic head spinning slowly while he gives the state of the union. That's the future.