Science
Was Lord Kelvin wrong? 3D-printed shape casts doubt on his 150-year-old theory – Livescience.com
Isotropic helicoids are meant to rotate as they move through a fluid. Now physicists are not so sure.

A 150-year-old theory about an otherworldly shape proposed by Lord Kelvin, one of history’s greatest physicists, has finally been put to the test and his conjecture is now in doubt.
In 1871, William Thomson, more commonly known as Lord Kelvin a famed British…
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