Which is a new thing from John Edmark, who makes amazing 3D printed Zoetropey devices. For which he has kindly made an instructables page. I’ve been following his stuff for a while now – was hoping he’d try the zoetrope thing with a pinecone or a sunflower or something – but if you’ve got an artichoke, the solution to every problem looks like an artichoke. 137.5ยบ is the golden angle… which I haven’t really looked into a whole lot. This is the angle-spacing between petals etc… I seem to remember reading somewhere that this angle in sunflowers minimises the elastic tension between the seeds… I think in plants, it also maximises the amount of light hitting the plant as a whole. Phyllotaxis. It’s quite interesting how the solutions to really complex computational problems can precipitate naturally out of really simple mathematics. Simplicity is its own reward… especially if you don’t…

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