There’s a nice mathematical question here from Oskar van Deventer: what is the correct shape for the spiral grooves in this puzzle he designed?
(He was forced to use an approximation in the puzzle as made.)
https://www.youtube.com/watch?v=EHqqXBqckjs
I find it very hard to visualise the motion that’s taking place here! I’d never even heard of Astrolabacus before.
robinhouston
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2025-07-14 21:12:38 UTC
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wss://relay.momostr.pinkPublished at
2025-07-14 21:12:38 UTCEvent JSON
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