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Recently, I saw my friend drawing cool, flower like graphs that looks like the path of electrons in atoms and he drew it with device with gears and holes with gears. What's that called?
Help identifying a mathy thing
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In summary, the conversation was about a unique drawing technique using gears and holes that resembled the path of electrons in atoms. The device used for this was called a Spirograph, which was first introduced in the US in 1966. It was a popular toy among children and could be easily made with just a pencil compass and paper.
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Then it could be the rhodonea curve: https://en.wikipedia.org/wiki/Rose_(mathematics)
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That looks quite like what he drew,but can that be drawn by gears(the wheels with teeth on them) and gear-holes?hilbert2 said:
I believe it is some sort of toy since he said he get it from a stationery shop. And that looked way to complicated to be a toy.
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Maybe it's some kind of a more sophisticated version of a "ruler and compass" geometric construction.
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OmCheeto
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Young physicist said:
I've only ever heard them called Spirographs.
First introduced here in the states in 1966, when I was about 7 years old.
I'm pretty sure my siblings and I nearly bankrupted our parents in paper & colored pen costs.
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OmCheeto
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I remember making those! All you needed was a pencil compass and paper.hilbert2 said:
I do not remember ever doodling one of those as a child.
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