Strange 3D-printed shapes test 150-year-old mathematical theory

In 1871, the mathematician Lord Kelvin invented a shape called an isotropic helicoid that physicists predicted would behave strangely in a fluid – now it has been tested for the first time

Strange 3D-printed shapes test 150-year-old mathematical theory
In 1871, the mathematician Lord Kelvin invented a shape called an isotropic helicoid that physicists predicted would behave strangely in a fluid – now it has been tested for the first time