Spinning Glass Simulation

I read recently about a question someone got asked in a technical interview for a mechanical engineering position at Apple. It went something like this: Suppose you had a rotating plate, like a lazy susan, and put a glass of water on it towards the edge of the plate. Suppose the plate started rotating, getting faster and faster, though the acceleration is slow enough that … Continue reading Spinning Glass Simulation

RhinoScripting for 3D CAD

My housemate Moon Duchin is interested in 3D printing these shapes that she studies. (She’s a mathematician.) The technical name for the shapes would be spheres of radius 1,2,3 in the Carnot-Carath√©odory metric on the real Heisenberg group induced by a hexagonal norm. It’s a mouthful. I’ll probably do another post describing how to come up with the shapes. Anyway, she’s actually already had two … Continue reading RhinoScripting for 3D CAD