Giant derby hats use bird physics to stay upright
The towering headwear at the Kentucky Derby isn't just a fashion statement; it's a feat of engineering that uses bird-like structural physics to survive 40-mile-per-hour winds.
The massive brims seen at Churchill Downs are actually sophisticated wind-deflectors that mirror the evolution of bird plumage. To prevent a gust from toppling a heavy hat, milliners use the quill-like structure of feathers to act as aerodynamic stabilizers, reducing lift just like the flaps on an airplane wing. Many of these hats are woven from abaca plant fibers into a flexible lattice called sinamay, which allows air to pass through the fabric rather than pushing against it.
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