Okay, so I can think of three or four ways of doing this, but the only one that seems "honest" is the one least likely to work.
... waiddaminnit. There's blocks at each end. Well, that makes it a whole lot simpler to figure out - especially since the end bulbs aren't touching the static bulbs at all. I'm thinking electromagnets. You could probably even configure the between bounce interval if you wanted, have it zip from one end to the other in a millisecond, or crawl along at one bulb a second.
Well, I didn't notice them until I was studying it carefully, trying to figure out if it was some sort of psychotically clever setup using mercury switches and the like, so I guess it's not that obvious.
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(no subject)
Date: 2012-08-05 09:17 pm (UTC)... waiddaminnit. There's blocks at each end. Well, that makes it a whole lot simpler to figure out - especially since the end bulbs aren't touching the static bulbs at all. I'm thinking electromagnets. You could probably even configure the between bounce interval if you wanted, have it zip from one end to the other in a millisecond, or crawl along at one bulb a second.
(no subject)
Date: 2012-08-06 07:06 pm (UTC)(no subject)
Date: 2012-08-06 08:13 pm (UTC)(no subject)
Date: 2012-08-06 03:23 pm (UTC)(no subject)
Date: 2012-08-06 09:23 pm (UTC)Very effective image/animation :)
(no subject)
Date: 2012-08-06 11:32 pm (UTC)(It looks like it's actually a lens flare (http://en.wikipedia.org/wiki/Lens_flare), but I think that, technically, those are a subset of caustics.)