knots
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Physicists Successfully Tie The Very First Quantum Knots
Theoretical physicists have been predicting that it should be possible for knots to form in quantum fields for decades, but nobody could figure out how to accomplish this feat experimentally. Now an international team has managed to do just that, tying knots in a superfluid for the very first time by manipulating magnetic fields.
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Why The Speed Of Ships Is Measured In Knots
How fast you’re going while out floating on the big blue can be notoriously tricky to judge if you’re just eyeballing it. One method used to get around this issue was introduced in the sixteenth century using a “chip log” or “log-line”.