Originally published at: In this 3D-printed sculpture, how does the ball defy gravity and roll uphill? | Boing Boing
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Neato!
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The awkwardly delineated “steps” and the tower join were immediate giveaways.
cool, but it’d been 2.7 times cooler had it been: magnets. specifically some sort of arduino’ed set of electromagnets triggered by an optical sensor. so much more marketable if it doesn’t depend on a special camera angle.
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So the answer to the question is “It doesn’t.”
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“Magic” in a nutshell. Some dumb clumsy mechanism that works because you would never think someone would waste the time necessary to contrive and build such a dumb clumsy mechanism.
The shadows give it away.
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It took two tries before I could see it as a slide-like thing, all I could see at first was a ball rolling slightly down a curvy ramp. I think I need to update my eye prescription.
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