Scientists solve 500-year-old mystery that puzzled Leonardo da Vinci

Leonardo’s Paradox, named after Renaissance artist Leonardo da Vinci who observed the phenomenon, centers on the way air bubbles appear to zigzag or spiral as they rise through water.
The polymath was unable to explain why bubbles move in this manner – rather than rise in a straight line, as physics would suggest – but did find a correlation between the size of a bubble and its movement: the unexpected motion only occurs once a bubble achieves a spherical radius of roughly 1 millimetre.
For more than 500 years, scientists studying fluid dynamics have also been unable to come up with a satisfying explanation for why this occurs – until now.
Scientists solve 500-year-old mystery that puzzled Leonardo da Vinci