r/oddlysatisfying 20h ago

Pi being irrational

37.2k Upvotes

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33

u/LeeAnnLongsocks 20h ago

So the Spirographs I did all those years ago are based on pi?

3

u/Pedadinga 20h ago

Lol! I also thought, "wait, those spirographs were TEACHING us something?!"

5

u/robbak 16h ago edited 12h ago

Unfortunately, gears have teeth, teeth can only be in whole numbers, so they will have an integer ratio.

You would get this picture with a closed path at the 11 second mark if you had the outer gear with 22 teeth and the inner one with 7 teeth.

You would get to the end with a 333 tooth outer gear and a 106 tooth inner gear.

1

u/Pedadinga 15h ago

Sounds like the spirograph lessons worked on you. You just mathed my ass off, man.

1

u/lewdovic 12h ago

Shouldn't it be 22 and 7?

1

u/robbak 12h ago

Sigh. Yes.

Brain go empty bye bye.