[rellimpank]

--“Modeling fluid flow between two surfaces lined with tiny ridges, researchers found tiny ridges actually reduce drag, allowing the for fluid to flow around in a more efficient manner….--

--I thought everybody already knew that the dimples on a golf ball make it go farther---less "drag"--

[Zeneta]

—I thought everybody already knew that the dimples on a golf ball make it go farther-—less “drag”—

Would strategically placed dimples on aircraft wings also reduce drag ?

[cripplecreek]

Venturi effect