ROYAL INSTITUTION OF GREAT BRITAIN / SCIENCE PHOTO LIBRARY ROYAL INSTITUTION OF GREAT BRITAIN / SCIENCE PHOTO LIBRARY
Whirlwinds. Diagram showing the structure of whirlwinds. At the top is a plan view, with a circular core surrounded by a pattern of in-flowing winds. Below is an illustration of a compound whirlwind, one in which several smaller eddies co-rotate about a central core. This was first published in 'Whirlwinds and Dust Storms of India' by P. Baddeley in 1860.
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