A strange shape described by mathematician Lord Kelvin in 1871 and predicted to behave unusually in a fluid has finally been fully studied in the …
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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
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