They are painted in a dozen colors and festooned with propellers that spin in the breeze. ... he comes home and makes 25 whirligigs,” said Leonard Simpson, ... The Vast World of Art and Design.

Whirligig beetles, ... Lift-based thrust works like a propeller, ... 2024 — New findings on how sharks achieve drag reduction could inspire the design of riblets for more efficient aircraft and ...

The whirligigs, the dealer explained, were made by an amateur. To assemble each one, he bought the man, hub and shaft, and then added a fin and a propeller. The best finished metal-man whirligig ...

The whirligigs, the dealer explained, were made by an amateur. To assemble each one, he bought the man, hub and shaft, and then added a fin and a propeller. The best finished metal-man whirligig ...