It's a LED matrix spinning at 15 RPS. That's why animations are a bit jittery and why the center is always darker / not illuminated. That said, their examples with anti-aliasing look amazing. I'd say this will be a great tool for doctors to analyze x-ray / CT data.
> why the center is always darker / not illuminated
I don’t understand that part. Why is that? I’m familiar with the theory of persistence of vision displays, or so i thought. Wouldn’t the center be brighter denser rather than darker? If you have the same led density but the leds “move less” because of the lower radius that is what i would expect. What am I thinking wrong?
I believe there is a plate with LEDs on both sides that is rotating. When you look at that plate from the side, it obscures the stuff behind it. That's why you see more "shadow" the closer you get to the center. In this video, you can see the effect:
Around the 10 seconds mark, the camera rotates around the display and then you can see a glowing laptop screen move behind the VX2. And there you can see that the center of the VX2 has something blurry but solid which obscures the background. That's the rotating plate with the LEDs on it, I believe.
