If l = 1 {\displaystyle l=1} , then the point A {\displaystyle A} is on the circumference of C i {\displaystyle C_{i}} . After a little more thought, it becomes apparent that the last of these is irrelevant – if you start with the small circle elsewhere in the big circle, and keep everything else the same, you’ll end up with the same design – possibly rotated around to a different angle; the main effect of moving where the small circle starts is to change how far through the motion you are when you start, and since the line joins up to itself, you can start from anywhere and draw the whole thing. We love this toy – and in this article, we take you through all the official Spirograph sets that are in production today. The first person we can look at is Johann Samuel Eberhardt, a Swiss mathematician who published a paper in 1843 titled “New and Useful Design for a Drawing Instrument.

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The original US-released Spirograph consisted of two differently sized plastic rings (or stators), with gear teeth on both the inside and outside of their circumferences. If you’d like to hear me chatting through some of this with Peter, you can listen to our Mathematical Objects podcast on the spirograph. Placing a pen in one of the holes and moving it around allows you to draw interesting patterns – the teeth of the circle and teeth on the cog will mesh to make the circle move and turn at the same time, and with the right pressure applied in the right direction, you can roll it around the inside of the circle, making interesting shapes.Spirograph Junior has larger gears than other Spirograph sets, making them easier to work with for smaller hands. This inspired me to dig a little deeper into how this thing works, and what kind of shapes you can make with it. The kit features a high quality, durable carrying case with snap-in storage and a built-in drawing surface. The Travel Spirograph is a smaller, handheld Spirograph where all the bits and pieces are contained within the shell of the Spirograph itself. If you want to take your Spirograph set on the road, look for one with a case that secures with buckles or another latching system.

Spirograph Deluxe Set – PlayMonster UK Spirograph Deluxe Set – PlayMonster UK

If Spirograph was an integral part of your childhood, the Kahootz Spirograph Diecast Collector’s Playset might be the nostalgic set you need.The clever contraption has been inspiring artists for more than two centuries, with the first Spirograph set appearing in the early 19th century. We love seeing what you make, so don’t forget to share your craft projects with us on Instagram, Facebook, or Twitter, too! The Spirograph Cyclex is essentially an all-in-one tool that ensures the Spirograph gears are always connecting with the outer Spirograph rings.