## Oloid

In 1929, sculptor and engineer Paul Schatz developed a device to generate a tumbling motion. It was formed by taking the convex hull of two discs of equal radius at right angles, with the distance…

## Hilbert’s space filling curve

In mathematics a curve is an object similar to a segment, but is not required to be straight. Guiseppe Peano discovered in 1890 that there are curves that fill a square without missing any points.…

## Constant width bodies

There are planar figures, like the circle, which maintain the same height in every direction. These figures are called constant width bodies. The simplest example of this is the Reuleaux triangle. A natural question is…