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Yeah, but I don't see 100% sync between where she moves her hand and where the ball glows.


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The animation is a little hard to follow because the "balls" get stuck in different places for a while, and the colors aren't easy to distinguish or attribute to certain activities.

Yeah totally. You can see the ‘ball’ dissolve into a pretty recognizable arc at the end there.

Also, about a minute into the video is a clip of the ball bouncing, which is a lot more impressive than the static ball in the linked article.

Nice trick to sync the movement of the balls with the lasers.

There's also something weird going on towards the edges of the screen. The balls become half-balls almost.

This seems more like metaballs than a lava lamp simulation. The balls interact before they touch.

This is great but is anyone else noticing the balls are hitting in mid-air without any change in trajectory?

Was just about to go to sleep and saw this. Now I'm on YouTube remembering how her could make that ball seemingly teleport, defying time, space, physics. If we didn't have slow-mo to see what really happened people would claim it was magic.

https://youtu.be/Qs2Pw952rcI

There'll never be another Warney.


At first I was wondering why the shading of the ball is off - turns out it's because it's not a ball but a rotating "torus" (orbiting ball)... The ball probably would look better if there was a longer period between the last and first phases, but that could reduce the power of the surprise.

My problem with the video is that it doesn't show me what can be done. It shows me that the ball can follow the line and with some magical symbols and lines "other logic" can be "somehow" added. It didn't do anything to tell me what other logic is possible, nor did it explain what the symbols and lines mean. So I still don't really know _what_ can be done (besides a pong game) and I've no idea what most of the on screen stuff even is or means.

On mobile this is a perfect illusion, unless you physicslly hide all but one ball.

The balls aren't moving across sides in the linked pattern.

They are in this one, and it appears correct to me:

https://jugglinglab.org/anim?pattern=%3C2p|2p%3E;stereo=true


You're definitely on to something. In both videos he touches his head and then spins the small ball. Still the execution is amazing.

You might be right, but they don’t turn smoothly, so I’m not entirely sure. The ball is definitely a sprite, it always faces the same direction.

I thi to it would work better if it actually showed one ball drop at a time, instead of just quickly generating the same bar/scatter graphs that the original sites show.

The single ball drop, with slower motion, gives you a chance to feel the uncertainty.


From what I can tell, ball lighting doesn't exist. We have lots and lots of people who think they've seen it. But there doesn't seem to be any legitimate footage, which is pretty damning considering there are cameras everywhere now.

It look like the white ball is faster..

The video of the Boing Ball:

https://www.youtube.com/watch?v=-ga41edXw3A&t=26s

I remember what were the effective limits at these times and to me it still looks impressive.

As an example, the observer would never get the idea that it's done by changing "the beginning of the screen" as the grid background stays on the same place all the time, and just the ball (with the shadow) moves.

Also note the change of the rotation direction as the ball hits the wall.


Sometimes the ball will go through the other slit. As with light bouncing around, it will go through both slits.
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