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Halloween?
Inspired and adapted from a math joke: Why do computer scientists always confuse Halloween and Christmas? Because 31 Oct = 25 Dec.And yes, in case you wonder, it is me in the poster below! One of the...
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JMP-rope, the theory and the software
The mathematical model behind the JMP-rope, as for any rotating POV system, is the polar coordinate system. Some details are already provided in POV Display: design and implementation.More...
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Seasonal plots, with gnuplot
Sometimes there is the need to plot some events which have a periodic trend.Let's consider a seasonal phenomenon; a typical plot may not fully highlight the regularity of the periodic behavior:In these...
View ArticleFun with flexagons, and SVG
If you don't know Vihart and her "Hexaflexagon series", go check it out: She shows how flexagons can be fun, and also provides some hexaflexagon templates to get started.And if you want to customize...
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3D-printed holder for magnetic spheres built with OpenSCAD
When I built the low-cost and precise rotary encoder with magnetic spheres I used 21 spheres because they fitted nicely in the other parts of the build I had around.However, if an arbitrary number of...
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