Knitting a recursive sweater

“Knitting is usually considered a female activity and females are usually not considered to be inclined to mathematics, or to science in general. Nevertheless mathematical skills are necessary for knitting, because they help to realize symmetries, inversions, scalings and proportions; good abstraction capabilities are indeed needed to figure the final result out and to map […]

Bicycle tracks – still being covered

As Sherlock Holmes aficionados will know, in the 1903 story ‘The Adventure of the Priory School’, Holmes determined the direction in which a bicycle was travelling simply by observing the tyre tracks which it had made – asserting that the deeper of the two wheel marks must have come from the heavier rear wheel … […]

The mathematics of somersaults on the trampoline

Very few researchers have attempted to describe a biomechanical model for numerical simulation of front and back somersaults, as performed on the trampoline (without twist). But there are exceptions – take for example Wojciech Blajer (Department of Mechanics, Institute of Applied Mechanics, Technical University of Radom, Poland) and Adam Czaplicki  (Department of Biomechanics, Institute of […]

Improbable Research